r1b1k3/p1ppnp1r/q5p1/1p1NP3/1PP4p/P2PbQ2/R1K3PP/2B2B1R b q - 1 23
FEN state: r1b1k3/p1ppnp1r/q5p1/1p1NP3/1PP4p/P2PbQ2/R1K3PP/2B2B1R b q - 1 23 ; Best move: e7d5
The current state of the chess board is: Black rook at a8, black bishop at c8 and black king at e8. Black pawn at a7, black pawn at c7, black pawn at d7, black knight at e7, black pawn at f7 and black rook at h7. Black queen at a6 and black pawn at g6. Black pawn at b5, white knight at d5 and white pawn at e5. White pawn at b4, white pawn at c4 and black pawn at h4. White pawn at a3, white pawn at d3, black bishop at e3 and white queen at f3. White rook at a2, white king at c2, white pawn at g2 and white pawn at h2. White bishop at c1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 23. Black to move.