r1b1kbnr/p2pppp1/n1p5/1p5p/1P6/q5PN/PBPPPPBP/RN1QKR2 w Q - 8 9
FEN state: r1b1kbnr/p2pppp1/n1p5/1p5p/1P6/q5PN/PBPPPPBP/RN1QKR2 w Q - 8 9 ; Best move: b1a3
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black knight at a6 and black pawn at c6. Black pawn at b5 and black pawn at h5. White pawn at b4. Black queen at a3, white pawn at g3 and white knight at h3. White pawn at a2, white bishop at b2, white pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, 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 8. Full move number is 9. White to move.