r1b4r/p2qkppp/4p2n/1pppP3/1n4P1/b1N2N1B/P1PP1P1P/R1BQKR2 w Q - 0 12
FEN state: r1b4r/p2qkppp/4p2n/1pppP3/1n4P1/b1N2N1B/P1PP1P1P/R1BQKR2 w Q - 0 12 ; Best move: c1a3
The current state of the chess board is: Black rook at a8, black bishop at c8 and black rook at h8. Black pawn at a7, black queen at d7, black king at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at e6 and black knight at h6. Black pawn at b5, black pawn at c5, black pawn at d5 and white pawn at e5. Black knight at b4 and white pawn at g4. Black bishop at a3, white knight at c3, white knight at f3 and white bishop at h3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 12. White to move.