1nbqk2r/r1p1p2p/B4pp1/1p1p4/1pQPPP1b/N4K1N/P1PB2PP/R2R4 b - - 2 23
FEN state: 1nbqk2r/r1p1p2p/B4pp1/1p1p4/1pQPPP1b/N4K1N/P1PB2PP/R2R4 b - - 2 23 ; Best move: b5c4
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black rook at a7, black pawn at c7, black pawn at e7 and black pawn at h7. White bishop at a6, black pawn at f6 and black pawn at g6. Black pawn at b5 and black pawn at d5. Black pawn at b4, white queen at c4, white pawn at d4, white pawn at e4, white pawn at f4 and black bishop at h4. White knight at a3, white king at f3 and white knight at h3. White pawn at a2, white pawn at c2, white bishop at d2, white pawn at g2 and white pawn at h2. White rook at a1 and white rook at d1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. Black to move.