rnbk1bn1/1p1p1pp1/2p4r/p3p2p/3B3N/P1PPP3/1q1N1PPP/R2QKB1R b K - 0 12
FEN state: rnbk1bn1/1p1p1pp1/2p4r/p3p2p/3B3N/P1PPP3/1q1N1PPP/R2QKB1R b K - 0 12 ; Best move: e5d4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at c6 and black rook at h6. Black pawn at a5, black pawn at e5 and black pawn at h5. White bishop at d4 and white knight at h4. White pawn at a3, white pawn at c3, white pawn at d3 and white pawn at e3. Black queen at b2, white knight at d2, white pawn at f2, white pawn at g2 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 h1. White kingside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.