1rb1kb1r/pp1pp1pp/5p1n/3q1P2/P1P2Q1P/1p1nP2R/3P2P1/RNB2KN1 w - - 3 20
FEN state: 1rb1kb1r/pp1pp1pp/5p1n/3q1P2/P1P2Q1P/1p1nP2R/3P2P1/RNB2KN1 w - - 3 20 ; Best move: f4b8
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at f6 and black knight at h6. Black queen at d5 and white pawn at f5. White pawn at a4, white pawn at c4, white queen at f4 and white pawn at h4. Black pawn at b3, black knight at d3, white pawn at e3 and white rook at h3. White pawn at d2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. White to move.