rnbq1b1r/1p1k1p1p/p2ppn2/2p5/1P1PPpP1/B7/P1P2P1P/RN1QKBR1 w Q - 0 9
FEN state: rnbq1b1r/1p1k1p1p/p2ppn2/2p5/1P1PPpP1/B7/P1P2P1P/RN1QKBR1 w Q - 0 9 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at b7, black king at d7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at d6, black pawn at e6 and black knight at f6. Black pawn at c5. White pawn at b4, white pawn at d4, white pawn at e4, black pawn at f4 and white pawn at g4. White bishop at a3. White pawn at a2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 9. White to move.