r1b4q/2pkbpr1/n2ppn2/P1p4P/1R3p2/3P1N1P/4PP2/2BQKBR1 w - - 1 21
FEN state: r1b4q/2pkbpr1/n2ppn2/P1p4P/1R3p2/3P1N1P/4PP2/2BQKBR1 w - - 1 21 ; Best move: b4f4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black queen at h8. Black pawn at c7, black king at d7, black bishop at e7, black pawn at f7 and black rook at g7. Black knight at a6, black pawn at d6, black pawn at e6 and black knight at f6. White pawn at a5, black pawn at c5 and white pawn at h5. White rook at b4 and black pawn at f4. White pawn at d3, white knight at f3 and white pawn at h3. White pawn at e2 and white pawn at f2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.