r1b3nr/1p1nkpp1/8/pq1ppQ1p/1Pp3PP/2P2P2/P2PPNB1/R1B1K2R b KQ - 9 20
FEN state: r1b3nr/1p1nkpp1/8/pq1ppQ1p/1Pp3PP/2P2P2/P2PPNB1/R1B1K2R b KQ - 9 20 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7, black knight at d7, black king at e7, black pawn at f7 and black pawn at g7. Black pawn at a5, black queen at b5, black pawn at d5, black pawn at e5, white queen at f5 and black pawn at h5. White pawn at b4, black pawn at c4, white pawn at g4 and white pawn at h4. White pawn at c3 and white pawn at f3. White pawn at a2, white pawn at d2, white pawn at e2, white knight at f2 and white bishop at g2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 9. Full move number is 20. Black to move.