rnb1kr2/pp1pp1bp/2p4n/2q2p2/P2P4/BPP2P2/4P1PP/RN2KBNR b q - 0 12
FEN state: rnb1kr2/pp1pp1bp/2p4n/2q2p2/P2P4/BPP2P2/4P1PP/RN2KBNR b q - 0 12 ; Best move: c5a5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at f8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7, black bishop at g7 and black pawn at h7. Black pawn at c6 and black knight at h6. Black queen at c5 and black pawn at f5. White pawn at a4 and white pawn at d4. White bishop at a3, white pawn at b3, white pawn at c3 and white pawn at f3. White pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.