1n2k1nr/2Bb1p2/2rbp2p/1p1p2N1/qP2P1P1/2PP4/P4P1P/R2QKBR1 b k - 4 18
FEN state: 1n2k1nr/2Bb1p2/2rbp2p/1p1p2N1/qP2P1P1/2PP4/P4P1P/R2QKBR1 b k - 4 18 ; Best move: d6c7
The current state of the chess board is: Black knight at b8, black king at e8, black knight at g8 and black rook at h8. White bishop at c7, black bishop at d7 and black pawn at f7. Black rook at c6, black bishop at d6, black pawn at e6 and black pawn at h6. Black pawn at b5, black pawn at d5 and white knight at g5. Black queen at a4, white pawn at b4, white pawn at e4 and white pawn at g4. White pawn at c3 and white pawn at d3. White pawn at a2, white pawn at f2 and white pawn at h2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 4. Full move number is 18. Black to move.