r1b1k2r/3p4/2p3pP/2nnppq1/p2PPP1b/PPP4P/1B2K1NR/R2Q1B2 b q - 0 23
FEN state: r1b1k2r/3p4/2p3pP/2nnppq1/p2PPP1b/PPP4P/1B2K1NR/R2Q1B2 b q - 0 23 ; Best move: d5f4
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 d7. Black pawn at c6, black pawn at g6 and white pawn at h6. Black knight at c5, black knight at d5, black pawn at e5, black pawn at f5 and black queen at g5. Black pawn at a4, white pawn at d4, white pawn at e4, white pawn at f4 and black bishop at h4. White pawn at a3, white pawn at b3, white pawn at c3 and white pawn at h3. White bishop at b2, white king at e2, white knight at g2 and white rook at h2. White rook at a1, white queen at d1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.