rnbk1b1r/1ppqn1pp/5p2/p7/3pP3/PBP4P/1P3PP1/RNB1K1NR b KQ - 4 13
FEN state: rnbk1b1r/1ppqn1pp/5p2/p7/3pP3/PBP4P/1P3PP1/RNB1K1NR b KQ - 4 13 ; Best move: a5a4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at c7, black queen at d7, black knight at e7, black pawn at g7 and black pawn at h7. Black pawn at f6. Black pawn at a5. Black pawn at d4 and white pawn at e4. White pawn at a3, white bishop at b3, white pawn at c3 and white pawn at h3. White pawn at b2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 4. Full move number is 13. Black to move.