rnbk2nr/1p1pp2p/pq4p1/2p2pb1/1P1P2P1/B3P2P/P1P1NP2/RNQ1KB1R b - - 4 12
FEN state: rnbk2nr/1p1pp2p/pq4p1/2p2pb1/1P1P2P1/B3P2P/P1P1NP2/RNQ1KB1R b - - 4 12 ; Best move: c5d4
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 knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7, black pawn at e7 and black pawn at h7. Black pawn at a6, black queen at b6 and black pawn at g6. Black pawn at c5, black pawn at f5 and black bishop at g5. White pawn at b4, white pawn at d4 and white pawn at g4. White bishop at a3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at c2, white knight at e2 and white pawn at f2. White rook at a1, white knight at b1, white queen at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 12. Black to move.