1rb1kb2/pp1pp3/n5p1/1qp1p1P1/1PP2Pn1/4P2r/P2PK1QP/RNB4R b - - 1 18
FEN state: 1rb1kb2/pp1pp3/n5p1/1qp1p1P1/1PP2Pn1/4P2r/P2PK1QP/RNB4R b - - 1 18 ; Best move: b5c4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at e7. Black knight at a6 and black pawn at g6. Black queen at b5, black pawn at c5, black pawn at e5 and white pawn at g5. White pawn at b4, white pawn at c4, white pawn at f4 and black knight at g4. White pawn at e3 and black rook at h3. White pawn at a2, white pawn at d2, white king at e2, white queen at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 18. Black to move.