rnb1k1n1/p2p1ppr/2p3p1/6P1/1B4P1/1P1PP3/P5Bb/1RQ1K3 w q - 1 23
FEN state: rnb1k1n1/p2p1ppr/2p3p1/6P1/1B4P1/1P1PP3/P5Bb/1RQ1K3 w q - 1 23 ; Best move: c1a3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at d7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at c6 and black pawn at g6. White pawn at g5. White bishop at b4 and white pawn at g4. White pawn at b3, white pawn at d3 and white pawn at e3. White pawn at a2, white bishop at g2 and black bishop at h2. White rook at b1, white queen at c1 and white king at e1. Black queenside is the only castle move available. Half move number is 1. Full move number is 23. White to move.