1rb1kbn1/pp1p3r/n3p2p/q1p2pp1/PP3P2/2PP2P1/1R2P2P/1NBQKBNR w K - 1 11
FEN state: 1rb1kbn1/pp1p3r/n3p2p/q1p2pp1/PP3P2/2PP2P1/1R2P2P/1NBQKBNR w K - 1 11 ; Best move: b4a5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at d7 and black rook at h7. Black knight at a6, black pawn at e6 and black pawn at h6. Black queen at a5, black pawn at c5, black pawn at f5 and black pawn at g5. White pawn at a4, white pawn at b4 and white pawn at f4. White pawn at c3, white pawn at d3 and white pawn at g3. White rook at b2, white pawn at e2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 11. White to move.