r1bq2nr/p1pp1kpp/np1bp3/5p2/P1B4P/4PP2/RPPP2P1/1NBQ1KNR b - - 4 7
FEN state: r1bq2nr/p1pp1kpp/np1bp3/5p2/P1B4P/4PP2/RPPP2P1/1NBQ1KNR b - - 4 7 ; Best move: a6b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black king at f7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at b6, black bishop at d6 and black pawn at e6. Black pawn at f5. White pawn at a4, white bishop at c4 and white pawn at h4. White pawn at e3 and white pawn at f3. White rook at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white pawn at g2. White knight at b1, white bishop at c1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 7. Black to move.