br1qk2r/p1pn2pp/1p3p1n/8/1b1pB2N/PP3P1P/1BPP1KP1/RN3Q1R b k - 12 16
FEN state: br1qk2r/p1pn2pp/1p3p1n/8/1b1pB2N/PP3P1P/1BPP1KP1/RN3Q1R b k - 12 16 ; Best move: b4d6
The current state of the chess board is: Black bishop at a8, black rook at b8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black knight at d7, black pawn at g7 and black pawn at h7. Black pawn at b6, black pawn at f6 and black knight at h6. Black bishop at b4, black pawn at d4, white bishop at e4 and white knight at h4. White pawn at a3, white pawn at b3, white pawn at f3 and white pawn at h3. White bishop at b2, white pawn at c2, white pawn at d2, white king at f2 and white pawn at g2. White rook at a1, white knight at b1, white queen at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 12. Full move number is 16. Black to move.