rnb1k3/1p1p1rp1/4pqnp/p2pp3/1bP2P2/BP5N/P2P2PP/RN1K1B1R w q - 0 18
FEN state: rnb1k3/1p1p1rp1/4pqnp/p2pp3/1bP2P2/BP5N/P2P2PP/RN1K1B1R w q - 0 18 ; Best move: a3b2
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 pawn at b7, black pawn at d7, black rook at f7 and black pawn at g7. Black pawn at e6, black queen at f6, black knight at g6 and black pawn at h6. Black pawn at a5, black pawn at d5 and black pawn at e5. Black bishop at b4, white pawn at c4 and white pawn at f4. White bishop at a3, white pawn at b3 and white knight at h3. White pawn at a2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 18. White to move.