rnb1k2r/6p1/2pq3n/1BPppPp1/PQ2P2p/1P5P/3P2P1/RNB1K2R w KQq - 1 21
FEN state: rnb1k2r/6p1/2pq3n/1BPppPp1/PQ2P2p/1P5P/3P2P1/RNB1K2R w KQq - 1 21 ; Best move: c5d6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at g7. Black pawn at c6, black queen at d6 and black knight at h6. White bishop at b5, white pawn at c5, black pawn at d5, black pawn at e5, white pawn at f5 and black pawn at g5. White pawn at a4, white queen at b4, white pawn at e4 and black pawn at h4. White pawn at b3 and white pawn 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 e1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 1. Full move number is 21. White to move.