rn2kbn1/pb2p2r/3p2p1/2pP1p1p/qBP2P1P/N3Q1KN/1P2P1P1/R4B1R b - - 1 18
FEN state: rn2kbn1/pb2p2r/3p2p1/2pP1p1p/qBP2P1P/N3Q1KN/1P2P1P1/R4B1R b - - 1 18 ; Best move: a4b4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black bishop at b7, black pawn at e7 and black rook at h7. Black pawn at d6 and black pawn at g6. Black pawn at c5, white pawn at d5, black pawn at f5 and black pawn at h5. Black queen at a4, white bishop at b4, white pawn at c4, white pawn at f4 and white pawn at h4. White knight at a3, white queen at e3, white king at g3 and white knight at h3. White pawn at b2, white pawn at e2 and white pawn at g2. White rook at a1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 18. Black to move.