rnbq3r/pp1ppk1p/2p5/4P1pP/2P1PpP1/7R/Pb1P2B1/RNBQK1N1 b Q - 0 12
FEN state: rnbq3r/pp1ppk1p/2p5/4P1pP/2P1PpP1/7R/Pb1P2B1/RNBQK1N1 b Q - 0 12 ; Best move: b2a1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7, black king at f7 and black pawn at h7. Black pawn at c6. White pawn at e5, black pawn at g5 and white pawn at h5. White pawn at c4, white pawn at e4, black pawn at f4 and white pawn at g4. White rook at h3. White pawn at a2, black bishop at b2, white pawn at d2 and white bishop at g2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.