r3k1r1/pb1pb2p/np2q1p1/PNp1pP2/5PnP/3P4/1PP2N2/1RBBKQ1R w Kq - 8 20
FEN state: r3k1r1/pb1pb2p/np2q1p1/PNp1pP2/5PnP/3P4/1PP2N2/1RBBKQ1R w Kq - 8 20 ; Best move: f5e6
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at g8. Black pawn at a7, black bishop at b7, black pawn at d7, black bishop at e7 and black pawn at h7. Black knight at a6, black pawn at b6, black queen at e6 and black pawn at g6. White pawn at a5, white knight at b5, black pawn at c5, black pawn at e5 and white pawn at f5. White pawn at f4, black knight at g4 and white pawn at h4. White pawn at d3. White pawn at b2, white pawn at c2 and white knight at f2. White rook at b1, white bishop at c1, white bishop at d1, white king at e1, white queen at f1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 8. Full move number is 20. White to move.