3q1k1r/b1pb1pp1/B1rp1n2/pp1QpP1p/PP1nP3/2P4P/1B1P2P1/1R1K1NNR w - - 0 20
FEN state: 3q1k1r/b1pb1pp1/B1rp1n2/pp1QpP1p/PP1nP3/2P4P/1B1P2P1/1R1K1NNR w - - 0 20 ; Best move: a4b5
The current state of the chess board is: Black queen at d8, black king at f8 and black rook at h8. Black bishop at a7, black pawn at c7, black bishop at d7, black pawn at f7 and black pawn at g7. White bishop at a6, black rook at c6, black pawn at d6 and black knight at f6. Black pawn at a5, black pawn at b5, white queen at d5, black pawn at e5, white pawn at f5 and black pawn at h5. White pawn at a4, white pawn at b4, black knight at d4 and white pawn at e4. White pawn at c3 and white pawn at h3. White bishop at b2, white pawn at d2 and white pawn at g2. White rook at b1, white king at d1, white knight at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. White to move.