rn2k1n1/pbppq1b1/4p1pp/1p5P/2P2rp1/1N2PP1N/PP1P4/1RB1QBKR w q - 0 23
FEN state: rn2k1n1/pbppq1b1/4p1pp/1p5P/2P2rp1/1N2PP1N/PP1P4/1RB1QBKR w q - 0 23 ; Best move: h3f4
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 pawn at a7, black bishop at b7, black pawn at c7, black pawn at d7, black queen at e7 and black bishop at g7. Black pawn at e6, black pawn at g6 and black pawn at h6. Black pawn at b5 and white pawn at h5. White pawn at c4, black rook at f4 and black pawn at g4. White knight at b3, white pawn at e3, white pawn at f3 and white knight at h3. White pawn at a2, white pawn at b2 and white pawn at d2. White rook at b1, white bishop at c1, white queen at e1, white bishop at f1, white king at g1 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.