1nb1k2r/rpp2p1p/p1qp1bn1/P2Bp1p1/1P2P1P1/2PP1P1N/3N3P/R1BQ1RK1 w k - 1 18
FEN state: 1nb1k2r/rpp2p1p/p1qp1bn1/P2Bp1p1/1P2P1P1/2PP1P1N/3N3P/R1BQ1RK1 w k - 1 18 ; Best move: d5c6
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at a6, black queen at c6, black pawn at d6, black bishop at f6 and black knight at g6. White pawn at a5, white bishop at d5, black pawn at e5 and black pawn at g5. White pawn at b4, white pawn at e4 and white pawn at g4. White pawn at c3, white pawn at d3, white pawn at f3 and white knight at h3. White knight at d2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white rook at f1 and white king at g1. Black kingside is the only castle move available. Half move number is 1. Full move number is 18. White to move.