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Rook |
Slides any distance along one axis — X, Y, or Z (6 directions) |
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Bishop |
Slides along face diagonals — exactly 2 axes change together (12 directions) |
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Unicorn |
Slides along space diagonals — all 3 axes change together (8 directions) |
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Queen |
Combines Rook + Bishop + Unicorn — slides in all 26 directions |
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King |
One step in any of the 26 directions — must stay out of check |
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Knight |
L-shape in 3D: 2 squares on one axis + 1 on another; jumps over pieces (up to 24 moves) |
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Pawn |
Advances one layer forward (White: +Z, Black: −Z); captures one step diagonally forward; promotes on the far layer |