r1b1k2r/pp3p2/3b1n2/P1pqp1p1/1PPN2pP/5PPR/3PN3/RBB1K3 b kq - 1 23
FEN state: r1b1k2r/pp3p2/3b1n2/P1pqp1p1/1PPN2pP/5PPR/3PN3/RBB1K3 b kq - 1 23 ; Best move: d5c4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at f7. Black bishop at d6 and black knight at f6. White pawn at a5, black pawn at c5, black queen at d5, black pawn at e5 and black pawn at g5. White pawn at b4, white pawn at c4, white knight at d4, black pawn at g4 and white pawn at h4. White pawn at f3, white pawn at g3 and white rook at h3. White pawn at d2 and white knight at e2. White rook at a1, white bishop at b1, white bishop at c1 and white king at e1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 23. Black to move.