r1b2qn1/p1b4r/np1ppk2/2pPpPN1/2P3Pp/PN2P3/1P1B3P/R3KBR1 w Q - 1 23
FEN state: r1b2qn1/p1b4r/np1ppk2/2pPpPN1/2P3Pp/PN2P3/1P1B3P/R3KBR1 w Q - 1 23 ; Best move: g5h7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at f8 and black knight at g8. Black pawn at a7, black bishop at c7 and black rook at h7. Black knight at a6, black pawn at b6, black pawn at d6, black pawn at e6 and black king at f6. Black pawn at c5, white pawn at d5, black pawn at e5, white pawn at f5 and white knight at g5. White pawn at c4, white pawn at g4 and black pawn at h4. White pawn at a3, white knight at b3 and white pawn at e3. White pawn at b2, white bishop at d2 and white pawn at h2. White rook at a1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 23. White to move.