r1b2k1r/4npb1/pp4pp/3p4/qPp1nP2/N1PP2PP/7R/RN2KB2 w Q - 6 23
FEN state: r1b2k1r/4npb1/pp4pp/3p4/qPp1nP2/N1PP2PP/7R/RN2KB2 w Q - 6 23 ; Best move: d3e4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8 and black rook at h8. Black knight at e7, black pawn at f7 and black bishop at g7. Black pawn at a6, black pawn at b6, black pawn at g6 and black pawn at h6. Black pawn at d5. Black queen at a4, white pawn at b4, black pawn at c4, black knight at e4 and white pawn at f4. White knight at a3, white pawn at c3, white pawn at d3, white pawn at g3 and white pawn at h3. White rook at h2. White rook at a1, white knight at b1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 6. Full move number is 23. White to move.