rnb1k3/1p1qb1r1/2pp1np1/PB3p1p/N2PP1PP/B1PQ1p2/P4P2/R4K1R b q - 2 23
FEN state: rnb1k3/1p1qb1r1/2pp1np1/PB3p1p/N2PP1PP/B1PQ1p2/P4P2/R4K1R b q - 2 23 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black king at e8. Black pawn at b7, black queen at d7, black bishop at e7 and black rook at g7. Black pawn at c6, black pawn at d6, black knight at f6 and black pawn at g6. White pawn at a5, white bishop at b5, black pawn at f5 and black pawn at h5. White knight at a4, white pawn at d4, white pawn at e4, white pawn at g4 and white pawn at h4. White bishop at a3, white pawn at c3, white queen at d3 and black pawn at f3. White pawn at a2 and white pawn at f2. White rook at a1, white king at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 23. Black to move.