rn2k1r1/4bp1p/1p3B2/1ppp2p1/3P3P/q4PQ1/2P5/1NR1KBNR w Kq - 0 21
FEN state: rn2k1r1/4bp1p/1p3B2/1ppp2p1/3P3P/q4PQ1/2P5/1NR1KBNR w Kq - 0 21 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black rook at g8. Black bishop at e7, black pawn at f7 and black pawn at h7. Black pawn at b6 and white bishop at f6. Black pawn at b5, black pawn at c5, black pawn at d5 and black pawn at g5. White pawn at d4 and white pawn at h4. Black queen at a3, white pawn at f3 and white queen at g3. White pawn at c2. White knight at b1, white rook at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 0. Full move number is 21. White to move.