rNb1kb1r/6p1/3p4/pPpN1p1p/Rn3PPQ/4P3/2PB1K1P/7R b kq - 1 23
FEN state: rNb1kb1r/6p1/3p4/pPpN1p1p/Rn3PPQ/4P3/2PB1K1P/7R b kq - 1 23 ; Best move: b4d5
The current state of the chess board is: Black rook at a8, white knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at g7. Black pawn at d6. Black pawn at a5, white pawn at b5, black pawn at c5, white knight at d5, black pawn at f5 and black pawn at h5. White rook at a4, black knight at b4, white pawn at f4, white pawn at g4 and white queen at h4. White pawn at e3. White pawn at c2, white bishop at d2, white king at f2 and white pawn at h2. White rook at h1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 23. Black to move.