r1bqkbr1/2p2p2/Bpnpp1pp/P2P4/8/1P2P3/2P2N2/RNBK3R w q - 0 15
FEN state: r1bqkbr1/2p2p2/Bpnpp1pp/P2P4/8/1P2P3/2P2N2/RNBK3R w q - 0 15 ; Best move: a6b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at c7 and black pawn at f7. White bishop at a6, black pawn at b6, black knight at c6, black pawn at d6, black pawn at e6, black pawn at g6 and black pawn at h6. White pawn at a5 and white pawn at d5. White pawn at b3 and white pawn at e3. White pawn at c2 and white knight at f2. White rook at a1, white knight at b1, white bishop at c1, white king at d1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 15. White to move.