r1b1k1n1/2ppqpp1/np4r1/p1Q5/3pP3/P6P/1PP2PP1/RN2KBNR b KQq - 2 13
FEN state: r1b1k1n1/2ppqpp1/np4r1/p1Q5/3pP3/P6P/1PP2PP1/RN2KBNR b KQq - 2 13 ; Best move: a6c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black knight at g8. Black pawn at c7, black pawn at d7, black queen at e7, black pawn at f7 and black pawn at g7. Black knight at a6, black pawn at b6 and black rook at g6. Black pawn at a5 and white queen at c5. Black pawn at d4 and white pawn at e4. White pawn at a3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 2. Full move number is 13. Black to move.