r1b1kb1r/2p2n2/4p2q/p4P2/2Pn1B1p/7P/P2PP1PR/R2NKBN1 w Qkq - 3 21
FEN state: r1b1kb1r/2p2n2/4p2q/p4P2/2Pn1B1p/7P/P2PP1PR/R2NKBN1 w Qkq - 3 21 ; Best move: f4h6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7 and black knight at f7. Black pawn at e6 and black queen at h6. Black pawn at a5 and white pawn at f5. White pawn at c4, black knight at d4, white bishop at f4 and black pawn at h4. White pawn at h3. White pawn at a2, white pawn at d2, white pawn at e2, white pawn at g2 and white rook at h2. White rook at a1, white knight at d1, white king at e1, white bishop at f1 and white knight at g1. White queenside, black kingside and black queenside castles are available. Half move number is 3. Full move number is 21. White to move.