r1b1kbr1/p2p1pp1/n7/1pQ2n1p/1NP2p2/P2P3q/RP1NP1PP/2B1KB1R b Kq - 1 13
FEN state: r1b1kbr1/p2p1pp1/n7/1pQ2n1p/1NP2p2/P2P3q/RP1NP1PP/2B1KB1R b Kq - 1 13 ; Best move: a6c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at d7, black pawn at f7 and black pawn at g7. Black knight at a6. Black pawn at b5, white queen at c5, black knight at f5 and black pawn at h5. White knight at b4, white pawn at c4 and black pawn at f4. White pawn at a3, white pawn at d3 and black queen at h3. White rook at a2, white pawn at b2, white knight at d2, white pawn at e2, white pawn at g2 and white pawn at h2. White bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 1. Full move number is 13. Black to move.