rnb1k3/1r4b1/p1p1p3/P2p1p1p/1qpP1Pp1/2P2QPB/4K2P/R3B1NR w q - 0 23
FEN state: rnb1k3/1r4b1/p1p1p3/P2p1p1p/1qpP1Pp1/2P2QPB/4K2P/R3B1NR w q - 0 23 ; Best move: c3b4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black king at e8. Black rook at b7 and black bishop at g7. Black pawn at a6, black pawn at c6 and black pawn at e6. White pawn at a5, black pawn at d5, black pawn at f5 and black pawn at h5. Black queen at b4, black pawn at c4, white pawn at d4, white pawn at f4 and black pawn at g4. White pawn at c3, white queen at f3, white pawn at g3 and white bishop at h3. White king at e2 and white pawn at h2. White rook at a1, white bishop at e1, white knight 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.