r1b1k2r/1p3n1q/2p1p2p/Rp1p2p1/5pP1/b3P2P/P2PBP1N/N1BQ1K1R w kq - 2 20
FEN state: r1b1k2r/1p3n1q/2p1p2p/Rp1p2p1/5pP1/b3P2P/P2PBP1N/N1BQ1K1R w kq - 2 20 ; Best move: a5a8
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at b7, black knight at f7 and black queen at h7. Black pawn at c6, black pawn at e6 and black pawn at h6. White rook at a5, black pawn at b5, black pawn at d5 and black pawn at g5. Black pawn at f4 and white pawn at g4. Black bishop at a3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at d2, white bishop at e2, white pawn at f2 and white knight at h2. White knight at a1, white bishop at c1, white queen at d1, white king at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 2. Full move number is 20. White to move.