rq2k1n1/1p1b1pbr/p1p1N2p/2Bp4/NP2P1pP/1n1PQ3/2P2PP1/4KBR1 b q - 0 23
FEN state: rq2k1n1/1p1b1pbr/p1p1N2p/2Bp4/NP2P1pP/1n1PQ3/2P2PP1/4KBR1 b q - 0 23 ; Best move: d7e6
The current state of the chess board is: Black rook at a8, black queen at b8, black king at e8 and black knight at g8. Black pawn at b7, black bishop at d7, black pawn at f7, black bishop at g7 and black rook at h7. Black pawn at a6, black pawn at c6, white knight at e6 and black pawn at h6. White bishop at c5 and black pawn at d5. White knight at a4, white pawn at b4, white pawn at e4, black pawn at g4 and white pawn at h4. Black knight at b3, white pawn at d3 and white queen at e3. White pawn at c2, white pawn at f2 and white pawn at g2. White king at e1, white bishop at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.