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chess-project/fixtures/tactics/pin.json
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Stefan 9ebca615c7 playwright
2025-12-06 17:37:44 +01:00

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{
"description": "High-quality PIN tactical puzzles from Lichess database",
"source": "https://database.lichess.org/",
"generatedAt": "auto-generated",
"cases": [
{
"id": "00C8e",
"initialFen": "8/5p1k/5Ppb/2p3P1/qp6/8/KB5Q/8 w - - 5 59",
"sideToMove": "white",
"rating": 1546,
"bestMove": {
"san": "Kb1",
"uci": "a2b1"
},
"moves": [
{
"uci": "a2b1",
"san": "Kb1",
"player": true
},
{
"uci": "a4d1",
"san": "Qd1+",
"player": false
},
{
"uci": "b2c1",
"san": "Bc1",
"player": true
}
],
"resultingFen": "8/5p1k/5Ppb/2p3P1/1p6/8/7Q/1KBq4 b - - 8 60",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00C8e (Rating: 1546, Popularity: 100)",
"tags": [
"endgame",
"equality",
"pin",
"short"
]
},
{
"id": "00XL2",
"initialFen": "2kr3r/ppp3pp/6q1/3Pnp2/1PPQp3/7P/P3NPP1/R4RK1 b - - 2 17",
"sideToMove": "black",
"rating": 1017,
"bestMove": {
"san": "Nf3+",
"uci": "e5f3"
},
"moves": [
{
"uci": "e5f3",
"san": "Nf3+",
"player": true
},
{
"uci": "g1h1",
"san": "Kh1",
"player": false
},
{
"uci": "f3d4",
"san": "Nxd4",
"player": true
}
],
"resultingFen": "2kr3r/ppp3pp/6q1/3P1p2/1PPnp3/7P/P3NPP1/R4R1K w - - 0 19",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00XL2 (Rating: 1017, Popularity: 100)",
"tags": [
"crushing",
"middlegame",
"pin",
"short"
]
},
{
"id": "00ZSd",
"initialFen": "2R5/5pk1/pb4p1/1p1q4/3P1P1p/P3r2P/1PQ3P1/3R3K b - - 7 45",
"sideToMove": "black",
"rating": 1386,
"bestMove": {
"san": "Rxh3+",
"uci": "e3h3"
},
"moves": [
{
"uci": "e3h3",
"san": "Rxh3+",
"player": true
},
{
"uci": "h1g1",
"san": "Kg1",
"player": false
},
{
"uci": "b6d4",
"san": "Bxd4+",
"player": true
},
{
"uci": "d1d4",
"san": "Rxd4",
"player": false
},
{
"uci": "d5d4",
"san": "Qxd4+",
"player": true
}
],
"resultingFen": "2R5/5pk1/p5p1/1p6/3q1P1p/P6r/1PQ3P1/6K1 w - - 0 48",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00ZSd (Rating: 1386, Popularity: 100)",
"tags": [
"crushing",
"endgame",
"long",
"pin"
]
},
{
"id": "01Gqt",
"initialFen": "4Q3/6bk/6pp/pp6/8/P2qBP1P/1P6/K1R5 b - - 0 37",
"sideToMove": "black",
"rating": 1398,
"bestMove": {
"san": "Qxa3+",
"uci": "d3a3"
},
"moves": [
{
"uci": "d3a3",
"san": "Qxa3+",
"player": true
},
{
"uci": "a1b1",
"san": "Kb1",
"player": false
},
{
"uci": "a3b2",
"san": "Qxb2#",
"player": true
}
],
"resultingFen": "4Q3/6bk/6pp/pp6/8/4BP1P/1q6/1KR5 w - - 0 39",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01Gqt (Rating: 1398, Popularity: 100)",
"tags": [
"endgame",
"mate",
"mateIn2",
"pin",
"short"
]
},
{
"id": "00tB9",
"initialFen": "1k1r3r/1Bq1b1p1/p2p4/2n1p1P1/4P3/4BP2/1PPQN3/2KR3R b - - 0 24",
"sideToMove": "black",
"rating": 1444,
"bestMove": {
"san": "Nb3+",
"uci": "c5b3"
},
"moves": [
{
"uci": "c5b3",
"san": "Nb3+",
"player": true
},
{
"uci": "c1b1",
"san": "Kb1",
"player": false
},
{
"uci": "b3d2",
"san": "Nxd2+",
"player": true
}
],
"resultingFen": "1k1r3r/1Bq1b1p1/p2p4/4p1P1/4P3/4BP2/1PPnN3/1K1R3R w - - 0 26",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00tB9 (Rating: 1444, Popularity: 99)",
"tags": [
"advantage",
"middlegame",
"pin",
"queensideAttack",
"short"
]
},
{
"id": "0147O",
"initialFen": "2N3k1/1p5p/BP4p1/3n1p2/n3p3/6P1/5P1P/6K1 w - - 6 38",
"sideToMove": "white",
"rating": 1638,
"bestMove": {
"san": "Bc4",
"uci": "a6c4"
},
"moves": [
{
"uci": "a6c4",
"san": "Bc4",
"player": true
},
{
"uci": "g8g7",
"san": "Kg7",
"player": false
},
{
"uci": "c4d5",
"san": "Bxd5",
"player": true
}
],
"resultingFen": "2N5/1p4kp/1P4p1/3B1p2/n3p3/6P1/5P1P/6K1 b - - 0 39",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 0147O (Rating: 1638, Popularity: 98)",
"tags": [
"advantage",
"endgame",
"pin",
"short"
]
},
{
"id": "01fG3",
"initialFen": "1kq1Q3/2p5/1p3p1p/4p3/8/2P1n3/PP1R2rP/7K w - - 4 32",
"sideToMove": "white",
"rating": 947,
"bestMove": {
"san": "Rd8",
"uci": "d2d8"
},
"moves": [
{
"uci": "d2d8",
"san": "Rd8",
"player": true
},
{
"uci": "c8d8",
"san": "Qxd8",
"player": false
},
{
"uci": "e8d8",
"san": "Qxd8+",
"player": true
}
],
"resultingFen": "1k1Q4/2p5/1p3p1p/4p3/8/2P1n3/PP4rP/7K b - - 0 33",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01fG3 (Rating: 947, Popularity: 98)",
"tags": [
"advantage",
"endgame",
"master",
"pin",
"short"
]
},
{
"id": "01g9c",
"initialFen": "r4rk1/ppR3pp/8/3pn1B1/8/3B1N1b/PP2NKPb/3QR3 b - - 0 19",
"sideToMove": "black",
"rating": 2023,
"bestMove": {
"san": "Ng4+",
"uci": "e5g4"
},
"moves": [
{
"uci": "e5g4",
"san": "Ng4+",
"player": true
},
{
"uci": "f2f1",
"san": "Kf1",
"player": false
},
{
"uci": "f8f3",
"san": "Rxf3#",
"player": true
}
],
"resultingFen": "r5k1/ppR3pp/8/3p2B1/6n1/3B1r1b/PP2N1Pb/3QRK2 w - - 0 21",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01g9c (Rating: 2023, Popularity: 98)",
"tags": [
"deflection",
"mate",
"mateIn2",
"middlegame",
"pin",
"short"
]
},
{
"id": "01Qia",
"initialFen": "1k4rr/pp3p2/b3p3/3p4/6R1/Q6P/PPq2PP1/4R1K1 w - - 0 28",
"sideToMove": "white",
"rating": 1900,
"bestMove": {
"san": "Qg3+",
"uci": "a3g3"
},
"moves": [
{
"uci": "a3g3",
"san": "Qg3+",
"player": true
},
{
"uci": "e6e5",
"san": "e5",
"player": false
},
{
"uci": "g4g8",
"san": "Rxg8+",
"player": true
},
{
"uci": "h8g8",
"san": "Rxg8",
"player": false
},
{
"uci": "g3g8",
"san": "Qxg8+",
"player": true
}
],
"resultingFen": "1k4Q1/pp3p2/b7/3pp3/8/7P/PPq2PP1/4R1K1 b - - 0 30",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01Qia (Rating: 1900, Popularity: 97)",
"tags": [
"crushing",
"long",
"middlegame",
"pin"
]
},
{
"id": "01aXE",
"initialFen": "b4rk1/p4p2/2q4p/2p5/2PbQ1p1/PR3PP1/1P4KP/2B1R3 b - - 1 31",
"sideToMove": "black",
"rating": 1536,
"bestMove": {
"san": "gxf3+",
"uci": "g4f3"
},
"moves": [
{
"uci": "g4f3",
"san": "gxf3+",
"player": true
},
{
"uci": "b3f3",
"san": "Rxf3",
"player": false
},
{
"uci": "c6e4",
"san": "Qxe4",
"player": true
},
{
"uci": "e1e4",
"san": "Rxe4",
"player": false
},
{
"uci": "a8e4",
"san": "Bxe4",
"player": true
}
],
"resultingFen": "5rk1/p4p2/7p/2p5/2Pbb3/P4RP1/1P4KP/2B5 w - - 0 34",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01aXE (Rating: 1536, Popularity: 97)",
"tags": [
"crushing",
"long",
"middlegame",
"pin"
]
},
{
"id": "005Bm",
"initialFen": "4rk2/p4q2/1p3Q1b/8/1p5N/2P1p3/P3P3/2K5 w - - 1 44",
"sideToMove": "white",
"rating": 1229,
"bestMove": {
"san": "Ng6+",
"uci": "h4g6"
},
"moves": [
{
"uci": "h4g6",
"san": "Ng6+",
"player": true
},
{
"uci": "f8g8",
"san": "Kg8",
"player": false
},
{
"uci": "f6h8",
"san": "Qh8#",
"player": true
}
],
"resultingFen": "4r1kQ/p4q2/1p4Nb/8/1p6/2P1p3/P3P3/2K5 b - - 4 45",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 005Bm (Rating: 1229, Popularity: 96)",
"tags": [
"endgame",
"mate",
"mateIn2",
"pin",
"short"
]
},
{
"id": "006pe",
"initialFen": "r4r2/2q1Nb2/5Qpk/2n4p/pp5P/8/1PP2PP1/2KR3R w - - 0 29",
"sideToMove": "white",
"rating": 1661,
"bestMove": {
"san": "Nf5+",
"uci": "e7f5"
},
"moves": [
{
"uci": "e7f5",
"san": "Nf5+",
"player": true
},
{
"uci": "h6h7",
"san": "Kh7",
"player": false
},
{
"uci": "f6g7",
"san": "Qg7#",
"player": true
}
],
"resultingFen": "r4r2/2q2bQk/6p1/2n2N1p/pp5P/8/1PP2PP1/2KR3R b - - 3 30",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 006pe (Rating: 1661, Popularity: 96)",
"tags": [
"master",
"mate",
"mateIn2",
"middlegame",
"pin",
"short"
]
},
{
"id": "009BH",
"initialFen": "3r3k/6p1/4Q3/4B3/1p3P2/4PKP1/3q4/8 w - - 18 52",
"sideToMove": "white",
"rating": 1563,
"bestMove": {
"san": "Qh6+",
"uci": "e6h6"
},
"moves": [
{
"uci": "e6h6",
"san": "Qh6+",
"player": true
},
{
"uci": "h8g8",
"san": "Kg8",
"player": false
},
{
"uci": "h6g7",
"san": "Qxg7#",
"player": true
}
],
"resultingFen": "3r2k1/6Q1/8/4B3/1p3P2/4PKP1/3q4/8 b - - 0 53",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 009BH (Rating: 1563, Popularity: 96)",
"tags": [
"endgame",
"mate",
"mateIn2",
"pin",
"short"
]
},
{
"id": "00Se9",
"initialFen": "5rk1/pp1n1r2/3p2N1/2pQ4/2P5/4P1P1/qP2KPP1/7R w - - 2 25",
"sideToMove": "white",
"rating": 1878,
"bestMove": {
"san": "Ne7+",
"uci": "g6e7"
},
"moves": [
{
"uci": "g6e7",
"san": "Ne7+",
"player": true
},
{
"uci": "g8g7",
"san": "Kg7",
"player": false
},
{
"uci": "d5g5",
"san": "Qg5#",
"player": true
}
],
"resultingFen": "5r2/pp1nNrk1/3p4/2p3Q1/2P5/4P1P1/qP2KPP1/7R b - - 5 26",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00Se9 (Rating: 1878, Popularity: 96)",
"tags": [
"mate",
"mateIn2",
"middlegame",
"pin",
"short"
]
},
{
"id": "00cy1",
"initialFen": "2rknb2/3q1pp1/p1pP3r/1pQ1P3/5P1p/1P4P1/PB4K1/3R4 w - - 0 28",
"sideToMove": "white",
"rating": 1273,
"bestMove": {
"san": "Qb6+",
"uci": "c5b6"
},
"moves": [
{
"uci": "c5b6",
"san": "Qb6+",
"player": true
},
{
"uci": "e8c7",
"san": "Nc7",
"player": false
},
{
"uci": "d6c7",
"san": "dxc7+",
"player": true
}
],
"resultingFen": "2rk1b2/2Pq1pp1/pQp4r/1p2P3/5P1p/1P4P1/PB4K1/3R4 b - - 0 29",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00cy1 (Rating: 1273, Popularity: 96)",
"tags": [
"advancedPawn",
"advantage",
"master",
"middlegame",
"pin",
"short"
]
},
{
"id": "00x5X",
"initialFen": "7r/Bp1k1ppp/b7/4P3/1b6/8/PPN2rPP/R2K3R b - - 1 19",
"sideToMove": "black",
"rating": 2087,
"bestMove": {
"san": "Rd2+",
"uci": "f2d2"
},
"moves": [
{
"uci": "f2d2",
"san": "Rd2+",
"player": true
},
{
"uci": "d1c1",
"san": "Kc1",
"player": false
},
{
"uci": "h8c8",
"san": "Rc8",
"player": true
},
{
"uci": "h1d1",
"san": "Rd1",
"player": false
},
{
"uci": "c8c2",
"san": "Rxc2+",
"player": true
}
],
"resultingFen": "8/Bp1k1ppp/b7/4P3/1b6/8/PPrr2PP/R1KR4 w - - 0 22",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00x5X (Rating: 2087, Popularity: 96)",
"tags": [
"crushing",
"long",
"middlegame",
"pin"
]
},
{
"id": "01FmQ",
"initialFen": "3r2k1/2B1P1pp/1Q3p2/2b5/P3n3/5N2/2q2PPP/5RK1 b - - 0 32",
"sideToMove": "black",
"rating": 1806,
"bestMove": {
"san": "Qxf2+",
"uci": "c2f2"
},
"moves": [
{
"uci": "c2f2",
"san": "Qxf2+",
"player": true
},
{
"uci": "f1f2",
"san": "Rxf2",
"player": false
},
{
"uci": "d8d1",
"san": "Rd1+",
"player": true
},
{
"uci": "f3e1",
"san": "Ne1",
"player": false
},
{
"uci": "d1e1",
"san": "Rxe1#",
"player": true
}
],
"resultingFen": "6k1/2B1P1pp/1Q3p2/2b5/P3n3/8/5RPP/4r1K1 w - - 0 35",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01FmQ (Rating: 1806, Popularity: 96)",
"tags": [
"long",
"mate",
"mateIn3",
"middlegame",
"pin",
"sacrifice"
]
},
{
"id": "01H66",
"initialFen": "4r3/6K1/8/4R1P1/1PpP4/P1P3k1/8/4b3 b - - 6 52",
"sideToMove": "black",
"rating": 1735,
"bestMove": {
"san": "Rxe5",
"uci": "e8e5"
},
"moves": [
{
"uci": "e8e5",
"san": "Rxe5",
"player": true
},
{
"uci": "d4e5",
"san": "dxe5",
"player": false
},
{
"uci": "e1c3",
"san": "Bxc3",
"player": true
},
{
"uci": "g7g6",
"san": "Kg6",
"player": false
},
{
"uci": "c3e5",
"san": "Bxe5",
"player": true
},
{
"uci": "g6f5",
"san": "Kf5",
"player": false
},
{
"uci": "c4c3",
"san": "c3",
"player": true
},
{
"uci": "f5e5",
"san": "Kxe5",
"player": false
},
{
"uci": "c3c2",
"san": "c2",
"player": true
},
{
"uci": "g5g6",
"san": "g6",
"player": false
},
{
"uci": "c2c1q",
"san": "c1=Q",
"player": true
}
],
"resultingFen": "8/8/6P1/4K3/1P6/P5k1/8/2q5 w - - 0 58",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01H66 (Rating: 1735, Popularity: 96)",
"tags": [
"advancedPawn",
"crushing",
"endgame",
"pin",
"promotion",
"veryLong"
]
},
{
"id": "01PBg",
"initialFen": "5r2/2p2pbk/4p1p1/7p/1q3P1n/pP3Q2/P5P1/1BBR3K w - - 0 29",
"sideToMove": "white",
"rating": 1416,
"bestMove": {
"san": "Qxh5+",
"uci": "f3h5"
},
"moves": [
{
"uci": "f3h5",
"san": "Qxh5+",
"player": true
},
{
"uci": "h7g8",
"san": "Kg8",
"player": false
},
{
"uci": "h5h4",
"san": "Qxh4",
"player": true
}
],
"resultingFen": "5rk1/2p2pb1/4p1p1/8/1q3P1Q/pP6/P5P1/1BBR3K b - - 0 30",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01PBg (Rating: 1416, Popularity: 96)",
"tags": [
"advantage",
"middlegame",
"pin",
"short"
]
},
{
"id": "003S3",
"initialFen": "1r3k1r/pNqnppb1/6pn/2p3Np/7P/2P2Q2/PP3PP1/R1B1K2R w KQ - 3 16",
"sideToMove": "white",
"rating": 1437,
"bestMove": {
"san": "Ne6+",
"uci": "g5e6"
},
"moves": [
{
"uci": "g5e6",
"san": "Ne6+",
"player": true
},
{
"uci": "f8g8",
"san": "Kg8",
"player": false
},
{
"uci": "e6c7",
"san": "Nxc7",
"player": true
}
],
"resultingFen": "1r4kr/pNNnppb1/6pn/2p4p/7P/2P2Q2/PP3PP1/R1B1K2R b KQ - 0 17",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 003S3 (Rating: 1437, Popularity: 95)",
"tags": [
"advantage",
"middlegame",
"pin",
"short"
]
},
{
"id": "00XXM",
"initialFen": "3r2r1/Qpqkbp2/p1p1p2p/3nP3/8/2P1NP1N/PP6/1K1R3R w - - 4 26",
"sideToMove": "white",
"rating": 1668,
"bestMove": {
"san": "c4",
"uci": "c3c4"
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{
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{
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{
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{
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],
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{
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{
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{
"id": "00jPw",
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{
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{
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{
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{
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},
{
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{
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{
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],
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},
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},
{
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{
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},
{
"uci": "f4f1",
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},
{
"uci": "b1c1",
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},
{
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}
],
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},
{
"id": "01UyQ",
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},
{
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},
{
"uci": "c3c1",
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},
{
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},
{
"uci": "c1d1",
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}
],
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},
{
"id": "01Vce",
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},
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},
{
"uci": "h2g3",
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},
{
"uci": "f5g5",
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},
{
"uci": "h4h3",
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},
{
"uci": "g5g3",
"san": "Qxg3#",
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}
],
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},
{
"id": "01eyQ",
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},
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},
{
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},
{
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],
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},
{
"id": "001kG",
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"sideToMove": "white",
"rating": 1904,
"bestMove": {
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},
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"san": "Qh5+",
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},
{
"uci": "f7g8",
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},
{
"uci": "h5c5",
"san": "Qxc5",
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}
],
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"context": "Lichess puzzle 001kG (Rating: 1904, Popularity: 94)",
"tags": [
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},
{
"id": "00GiQ",
"initialFen": "5r2/5p1k/6pp/ppqp1P2/7Q/5N2/6PP/5N1K w - - 0 32",
"sideToMove": "white",
"rating": 1854,
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},
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"san": "Ng5+",
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},
{
"uci": "h7g7",
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},
{
"uci": "f5f6",
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},
{
"uci": "g7f6",
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},
{
"uci": "g5e4",
"san": "Ne4+",
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}
],
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"context": "Lichess puzzle 00GiQ (Rating: 1854, Popularity: 94)",
"tags": [
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},
{
"id": "00Tdk",
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"sideToMove": "black",
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"bestMove": {
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"uci": "e5f3"
},
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"san": "Nf3+",
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},
{
"uci": "g1h1",
"san": "Kh1",
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},
{
"uci": "f3d2",
"san": "Nxd2",
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}
],
"resultingFen": "r6r/4kppp/2pNpnq1/p1P5/8/B3P3/PP1n1PPP/3R1R1K w - - 0 22",
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"context": "Lichess puzzle 00Tdk (Rating: 975, Popularity: 94)",
"tags": [
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},
{
"id": "00YbZ",
"initialFen": "b6k/8/1Q4p1/4q2p/5r1P/P1N3R1/1PP3PK/8 b - - 4 35",
"sideToMove": "black",
"rating": 1347,
"bestMove": {
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"uci": "f4h4"
},
"moves": [
{
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"san": "Rxh4+",
"player": true
},
{
"uci": "h2g1",
"san": "Kg1",
"player": false
},
{
"uci": "e5e1",
"san": "Qe1#",
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}
],
"resultingFen": "b6k/8/1Q4p1/7p/7r/P1N3R1/1PP3P1/4q1K1 w - - 2 37",
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},
"context": "Lichess puzzle 00YbZ (Rating: 1347, Popularity: 94)",
"tags": [
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},
{
"id": "00p5I",
"initialFen": "2r5/1b4k1/2q1p1pr/2p5/1p1pR1QP/pP1P1PP1/P1P5/4R1K1 w - - 1 31",
"sideToMove": "white",
"rating": 2021,
"bestMove": {
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"uci": "e4e6"
},
"moves": [
{
"uci": "e4e6",
"san": "Rxe6",
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},
{
"uci": "c6f3",
"san": "Qxf3",
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},
{
"uci": "e6e7",
"san": "Re7+",
"player": true
},
{
"uci": "g7f8",
"san": "Kf8",
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},
{
"uci": "e1f1",
"san": "Rf1",
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},
{
"uci": "f3f1",
"san": "Qxf1+",
"player": false
},
{
"uci": "g1f1",
"san": "Kxf1",
"player": true
},
{
"uci": "f8e7",
"san": "Kxe7",
"player": false
},
{
"uci": "g4g5",
"san": "Qg5+",
"player": true
},
{
"uci": "e7d7",
"san": "Kd7",
"player": false
},
{
"uci": "g5h6",
"san": "Qxh6",
"player": true
}
],
"resultingFen": "2r5/1b1k4/6pQ/2p5/1p1p3P/pP1P2P1/P1P5/5K2 b - - 0 36",
"expectedPattern": {
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"context": "Lichess puzzle 00p5I (Rating: 2021, Popularity: 94)",
"tags": [
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"master",
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"middlegame",
"pin",
"veryLong"
]
},
{
"id": "00p93",
"initialFen": "1k1r1b1r/n1p3p1/p3n1p1/1p2P3/P2B2Pq/2P2Q1P/1PB1K3/R6R w - - 1 25",
"sideToMove": "white",
"rating": 1979,
"bestMove": {
"san": "Bxa7+",
"uci": "d4a7"
},
"moves": [
{
"uci": "d4a7",
"san": "Bxa7+",
"player": true
},
{
"uci": "b8a7",
"san": "Kxa7",
"player": false
},
{
"uci": "a4b5",
"san": "axb5",
"player": true
},
{
"uci": "d8d2",
"san": "Rd2+",
"player": false
},
{
"uci": "e2d2",
"san": "Kxd2",
"player": true
}
],
"resultingFen": "5b1r/k1p3p1/p3n1p1/1P2P3/6Pq/2P2Q1P/1PBK4/R6R b - - 0 27",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 00p93 (Rating: 1979, Popularity: 94)",
"tags": [
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"pin",
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]
},
{
"id": "00sKo",
"initialFen": "5rk1/R5bp/q2p4/3Ppn1p/4Q3/4B2P/5PP1/5RK1 b - - 0 24",
"sideToMove": "black",
"rating": 1623,
"bestMove": {
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"uci": "a6f1"
},
"moves": [
{
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"san": "Qxf1+",
"player": true
},
{
"uci": "g1f1",
"san": "Kxf1",
"player": false
},
{
"uci": "f5g3",
"san": "Ng3+",
"player": true
},
{
"uci": "f1e1",
"san": "Ke1",
"player": false
},
{
"uci": "g3e4",
"san": "Nxe4",
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}
],
"resultingFen": "5rk1/R5bp/3p4/3Pp2p/4n3/4B2P/5PP1/4K3 w - - 0 27",
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"context": "Lichess puzzle 00sKo (Rating: 1623, Popularity: 94)",
"tags": [
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},
{
"id": "00umX",
"initialFen": "2k3rr/ppp2p2/3B1p2/2pP1q1p/2P5/2N2B1b/PP1Q1PP1/R3R1K1 b - - 0 19",
"sideToMove": "black",
"rating": 1728,
"bestMove": {
"san": "Qxf3",
"uci": "f5f3"
},
"moves": [
{
"uci": "f5f3",
"san": "Qxf3",
"player": true
},
{
"uci": "e1e8",
"san": "Re8+",
"player": false
},
{
"uci": "c8d7",
"san": "Kd7",
"player": true
}
],
"resultingFen": "4R1rr/pppk1p2/3B1p2/2pP3p/2P5/2N2q1b/PP1Q1PP1/R5K1 w - - 2 21",
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"type": "PIN"
},
"context": "Lichess puzzle 00umX (Rating: 1728, Popularity: 94)",
"tags": [
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"pin",
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},
{
"id": "013Kj",
"initialFen": "2r2rk1/pp3p2/4p3/3p2q1/3P4/P1N4Q/1PP5/1R4K1 w - - 0 31",
"sideToMove": "white",
"rating": 1822,
"bestMove": {
"san": "Kh1",
"uci": "g1h1"
},
"moves": [
{
"uci": "g1h1",
"san": "Kh1",
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{
"uci": "g5g6",
"san": "Qg6",
"player": false
},
{
"uci": "b1g1",
"san": "Rg1",
"player": true
},
{
"uci": "g8g7",
"san": "Kg7",
"player": false
},
{
"uci": "g1g6",
"san": "Rxg6+",
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}
],
"resultingFen": "2r2r2/pp3pk1/4p1R1/3p4/3P4/P1N4Q/1PP5/7K b - - 0 33",
"expectedPattern": {
"type": "PIN"
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"context": "Lichess puzzle 013Kj (Rating: 1822, Popularity: 94)",
"tags": [
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"long",
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},
{
"id": "01B5q",
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"sideToMove": "white",
"rating": 2176,
"bestMove": {
"san": "Qg7+",
"uci": "f6g7"
},
"moves": [
{
"uci": "f6g7",
"san": "Qg7+",
"player": true
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{
"uci": "g8g7",
"san": "Kxg7",
"player": false
},
{
"uci": "d4f5",
"san": "Nf5+",
"player": true
},
{
"uci": "g7g8",
"san": "Kg8",
"player": false
},
{
"uci": "f5h6",
"san": "Nh6#",
"player": true
}
],
"resultingFen": "r4rk1/1pp2p1p/p5pN/3n3P/P3q3/8/1B4R1/5B1K b - - 3 39",
"expectedPattern": {
"type": "PIN"
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"context": "Lichess puzzle 01B5q (Rating: 2176, Popularity: 94)",
"tags": [
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"doubleCheck",
"long",
"mate",
"mateIn3",
"middlegame",
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]
},
{
"id": "01HQ8",
"initialFen": "r4rk1/pp3ppp/2pp1q2/4p1B1/2BnP3/P2P1b2/1PP2P2/R1Q2RK1 w - - 2 16",
"sideToMove": "white",
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"bestMove": {
"san": "Bxf6",
"uci": "g5f6"
},
"moves": [
{
"uci": "g5f6",
"san": "Bxf6",
"player": true
},
{
"uci": "d4e2",
"san": "Ne2+",
"player": false
},
{
"uci": "g1h2",
"san": "Kh2",
"player": true
},
{
"uci": "e2c1",
"san": "Nxc1",
"player": false
},
{
"uci": "f1g1",
"san": "Rg1",
"player": true
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],
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{
"id": "01273",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
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{
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],
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{
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{
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{
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{
"uci": "h4h3",
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{
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],
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{
"id": "01VXI",
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{
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},
{
"uci": "c1a3",
"san": "Ba3+",
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{
"uci": "e8e7",
"san": "Re7",
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},
{
"uci": "a3e7",
"san": "Bxe7+",
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},
{
"uci": "f8e7",
"san": "Kxe7",
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},
{
"uci": "h8g7",
"san": "Qxg7+",
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],
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},
{
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"uci": "d2f2"
},
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"san": "Rxf2+",
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},
{
"uci": "f3f2",
"san": "Qxf2",
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},
{
"uci": "g6e4",
"san": "Bxe4+",
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},
{
"uci": "g2g1",
"san": "Kg1",
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},
{
"uci": "b2a1",
"san": "Qxa1+",
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}
],
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},
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]
},
{
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"uci": "g5h6"
},
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"san": "Bh6+",
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{
"uci": "h5g7",
"san": "Ng7",
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},
{
"uci": "e6g6",
"san": "Qxg6",
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},
{
"uci": "e7f6",
"san": "Bf6",
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},
{
"uci": "e1e8",
"san": "Rxe8+",
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},
{
"uci": "d8e8",
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{
"uci": "g6f6",
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],
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},
{
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},
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{
"uci": "g8h8",
"san": "Kh8",
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},
{
"uci": "h6f7",
"san": "Nxf7+",
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}
],
"resultingFen": "2rqrb1k/pp3Npp/8/3p4/3NnnQ1/2P4P/PP3PP1/R4RK1 b - - 0 24",
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},
"context": "Lichess puzzle 00F5G (Rating: 1538, Popularity: 86)",
"tags": [
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},
{
"id": "00RtC",
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"sideToMove": "black",
"rating": 1948,
"bestMove": {
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"uci": "d4e2"
},
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{
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},
{
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},
{
"uci": "c5f2",
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},
{
"uci": "c3g7",
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},
{
"uci": "f8g7",
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}
],
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},
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},
{
"id": "00zqB",
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"sideToMove": "white",
"rating": 1866,
"bestMove": {
"san": "Qh7#",
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},
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}
],
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},
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},
{
"id": "01pRy",
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"sideToMove": "black",
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"bestMove": {
"san": "Qxg2+",
"uci": "d5g2"
},
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{
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},
{
"uci": "g1g2",
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},
{
"uci": "d7d1",
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}
],
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},
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{
"id": "00O9Z",
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"sideToMove": "black",
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},
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{
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},
{
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},
{
"uci": "e2e1",
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},
{
"uci": "f2f1",
"san": "Rf1",
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},
{
"uci": "b6d4",
"san": "Bxd4+",
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},
{
"uci": "g1h1",
"san": "Kh1",
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},
{
"uci": "e1f1",
"san": "Rxf1#",
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}
],
"resultingFen": "5Q1R/5p1p/6p1/p6k/P2b4/8/1P4PP/5r1K w - - 0 36",
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},
"context": "Lichess puzzle 00O9Z (Rating: 1628, Popularity: 85)",
"tags": [
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},
{
"id": "01Nky",
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"sideToMove": "black",
"rating": 1990,
"bestMove": {
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"uci": "g7c3"
},
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{
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"san": "Bxc3",
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},
{
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},
{
"uci": "a5c3",
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},
{
"uci": "e3d4",
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},
{
"uci": "c3g3",
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}
],
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},
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},
{
"id": "00blC",
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},
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},
{
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},
{
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},
{
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},
{
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}
],
"resultingFen": "1k6/8/8/1K1r4/8/1P6/8/8 w - - 0 50",
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{
"id": "00luO",
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},
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{
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},
{
"uci": "c2a3",
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},
{
"uci": "b1a1",
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{
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],
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{
"id": "00tTz",
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"sideToMove": "black",
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},
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{
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"san": "Qxg3",
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{
"uci": "d6g3",
"san": "Bxg3",
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],
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{
"id": "00W5B",
"initialFen": "1r4k1/p5pp/5p2/2Rb4/1P4P1/P7/3r3P/3B1RK1 w - - 0 35",
"sideToMove": "white",
"rating": 1411,
"bestMove": {
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"uci": "c5d5"
},
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{
"uci": "d2d5",
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{
"uci": "d1b3",
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{
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{
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],
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"context": "Lichess puzzle 00W5B (Rating: 1411, Popularity: 82)",
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{
"id": "01Cqi",
"initialFen": "r3q1r1/1ppn3k/p2p1N1b/3Pp1Bp/1PP4P/5P1Q/P7/2K2RR1 b - - 10 27",
"sideToMove": "black",
"rating": 1499,
"bestMove": {
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"uci": "d7f6"
},
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{
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"san": "Bxh6",
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{
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],
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{
"id": "01KVi",
"initialFen": "2r5/1p6/p2p3R/3qpkP1/4np2/3B4/PP6/1K4R1 w - - 0 32",
"sideToMove": "white",
"rating": 1268,
"bestMove": {
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"uci": "h6f6"
},
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"san": "Rf6#",
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{
"id": "00o5f",
"initialFen": "6r1/2R3pk/1n2p2p/p6N/6PP/8/P7/6K1 w - - 1 41",
"sideToMove": "white",
"rating": 1256,
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"uci": "h5f6"
},
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"san": "Nf6+",
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{
"uci": "h7h8",
"san": "Kh8",
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},
{
"uci": "f6g8",
"san": "Nxg8",
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],
"resultingFen": "6Nk/2R3p1/1n2p2p/p7/6PP/8/P7/6K1 b - - 0 42",
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{
"id": "002rd",
"initialFen": "r6k/q1p2p1p/1b2bPr1/p1ppP2Q/3P2p1/4B3/PP2NRPP/3R2K1 w - - 2 26",
"sideToMove": "white",
"rating": 1795,
"bestMove": {
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"uci": "e2f4"
},
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"san": "Nf4",
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{
"uci": "c5d4",
"san": "cxd4",
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},
{
"uci": "f4g6",
"san": "Nxg6+",
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},
{
"uci": "f7g6",
"san": "fxg6",
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},
{
"uci": "h5h6",
"san": "Qh6",
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],
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{
"id": "01YaK",
"initialFen": "1q3r1k/2p3p1/3pBb1p/p7/8/2N1P1P1/P1PQP2P/K2R3R b - - 0 19",
"sideToMove": "black",
"rating": 1533,
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"uci": "b8b4"
},
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"san": "Qb4",
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{
"uci": "d2d4",
"san": "Qd4",
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},
{
"uci": "f6d4",
"san": "Bxd4",
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}
],
"resultingFen": "5r1k/2p3p1/3pB2p/p7/1q1b4/2N1P1P1/P1P1P2P/K2R3R w - - 0 21",
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"context": "Lichess puzzle 01YaK (Rating: 1533, Popularity: 77)",
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{
"id": "00Knu",
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"sideToMove": "white",
"rating": 1872,
"bestMove": {
"san": "Qxg6",
"uci": "g5g6"
},
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"san": "Qxg6",
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{
"uci": "d8b6",
"san": "Qb6+",
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},
{
"uci": "g1h2",
"san": "Kh2",
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}
],
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"tags": [
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{
"id": "01phf",
"initialFen": "5k1r/p1p1qppp/8/1r6/1b1p2b1/1P4P1/PBPPPPBP/R2QK2R b KQ - 2 14",
"sideToMove": "black",
"rating": 1825,
"bestMove": {
"san": "Bxe2",
"uci": "g4e2"
},
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"uci": "g4e2",
"san": "Bxe2",
"player": true
},
{
"uci": "d1e2",
"san": "Qxe2",
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},
{
"uci": "b5e5",
"san": "Re5",
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},
{
"uci": "e2e5",
"san": "Qxe5",
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},
{
"uci": "e7e5",
"san": "Qxe5+",
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}
],
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},
{
"id": "01CvZ",
"initialFen": "2b5/8/6p1/1R6/3kP3/5PPn/4K3/8 b - - 2 54",
"sideToMove": "black",
"rating": 1232,
"bestMove": {
"san": "Ba6",
"uci": "c8a6"
},
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"uci": "c8a6",
"san": "Ba6",
"player": true
},
{
"uci": "e2d2",
"san": "Kd2",
"player": false
},
{
"uci": "a6b5",
"san": "Bxb5",
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}
],
"resultingFen": "8/8/6p1/1b6/3kP3/5PPn/3K4/8 w - - 0 56",
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"context": "Lichess puzzle 01CvZ (Rating: 1232, Popularity: 73)",
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{
"id": "00yYi",
"initialFen": "2k3rr/ppp2p1p/2b5/4Nn2/3pPQ2/1P4Pq/P1PP1P1P/RN3RK1 b - - 0 18",
"sideToMove": "black",
"rating": 1942,
"bestMove": {
"san": "Nh4",
"uci": "f5h4"
},
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{
"uci": "f5h4",
"san": "Nh4",
"player": true
},
{
"uci": "f4h4",
"san": "Qxh4",
"player": false
},
{
"uci": "h3h4",
"san": "Qxh4",
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}
],
"resultingFen": "2k3rr/ppp2p1p/2b5/4N3/3pP2q/1P4P1/P1PP1P1P/RN3RK1 w - - 0 20",
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},
"context": "Lichess puzzle 00yYi (Rating: 1942, Popularity: 70)",
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"pin",
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},
{
"id": "00Yqw",
"initialFen": "1Qbk1b1r/3r1pp1/p1BP3p/8/3q4/6P1/1PP3PP/1K5R w - - 1 34",
"sideToMove": "white",
"rating": 1880,
"bestMove": {
"san": "Bxd7",
"uci": "c6d7"
},
"moves": [
{
"uci": "c6d7",
"san": "Bxd7",
"player": true
},
{
"uci": "d4c5",
"san": "Qc5",
"player": false
},
{
"uci": "d7c8",
"san": "Bxc8",
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}
],
"resultingFen": "1QBk1b1r/5pp1/p2P3p/2q5/8/6P1/1PP3PP/1K5R b - - 0 35",
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},
"context": "Lichess puzzle 00Yqw (Rating: 1880, Popularity: 67)",
"tags": [
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},
{
"id": "015hW",
"initialFen": "6k1/5pb1/p6p/1p4P1/8/5BQ1/PP1q1PP1/6K1 b - - 0 36",
"sideToMove": "black",
"rating": 1171,
"bestMove": {
"san": "Qe1+",
"uci": "d2e1"
},
"moves": [
{
"uci": "d2e1",
"san": "Qe1+",
"player": true
},
{
"uci": "g1h2",
"san": "Kh2",
"player": false
},
{
"uci": "g7e5",
"san": "Be5",
"player": true
}
],
"resultingFen": "6k1/5p2/p6p/1p2b1P1/8/5BQ1/PP3PPK/4q3 w - - 3 38",
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},
"context": "Lichess puzzle 015hW (Rating: 1171, Popularity: 66)",
"tags": [
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"pin",
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},
{
"id": "01lq2",
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"sideToMove": "white",
"rating": 1457,
"bestMove": {
"san": "Nxe5+",
"uci": "c6e5"
},
"moves": [
{
"uci": "c6e5",
"san": "Nxe5+",
"player": true
},
{
"uci": "f7g8",
"san": "Kg8",
"player": false
},
{
"uci": "e5g4",
"san": "Nxg4",
"player": true
}
],
"resultingFen": "r4rk1/p5pp/1b3p2/3R4/2P3N1/1P6/PB4PP/5R1K b - - 0 21",
"expectedPattern": {
"type": "PIN"
},
"context": "Lichess puzzle 01lq2 (Rating: 1457, Popularity: 56)",
"tags": [
"crushing",
"master",
"middlegame",
"pin",
"short"
]
}
]
}
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