rn2k1n1/4bp1r/p4B1p/1ppPp1N1/1P4PR/N7/P1P4P/3KQB1R w q - 0 23
FEN state: rn2k1n1/4bp1r/p4B1p/1ppPp1N1/1P4PR/N7/P1P4P/3KQB1R w q - 0 23 ; Best move: f6e7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black knight at g8. Black bishop at e7, black pawn at f7 and black rook at h7. Black pawn at a6, white bishop at f6 and black pawn at h6. Black pawn at b5, black pawn at c5, white pawn at d5, black pawn at e5 and white knight at g5. White pawn at b4, white pawn at g4 and white rook at h4. White knight at a3. White pawn at a2, white pawn at c2 and white pawn at h2. White king at d1, white queen at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 23. White to move.