r1b1kbnr/pp5p/nN1pq3/1Pp2P2/8/2PP2PP/P3BP2/R3K1NR w KQ - 0 20
FEN state: r1b1kbnr/pp5p/nN1pq3/1Pp2P2/8/2PP2PP/P3BP2/R3K1NR w KQ - 0 20 ; Best move: f5e6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at h7. Black knight at a6, white knight at b6, black pawn at d6 and black queen at e6. White pawn at b5, black pawn at c5 and white pawn at f5. White pawn at c3, white pawn at d3, white pawn at g3 and white pawn at h3. White pawn at a2, white bishop at e2 and white pawn at f2. White rook at a1, white king at e1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 20. White to move.