rnb5/pppkb3/6rn/1N2PqpP/1PPp1pB1/4P3/P2B1P2/1RQ1K1NR w K - 1 20
FEN state: rnb5/pppkb3/6rn/1N2PqpP/1PPp1pB1/4P3/P2B1P2/1RQ1K1NR w K - 1 20 ; Best move: g4f5
The current state of the chess board is: Black rook at a8, black knight at b8 and black bishop at c8. Black pawn at a7, black pawn at b7, black pawn at c7, black king at d7 and black bishop at e7. Black rook at g6 and black knight at h6. White knight at b5, white pawn at e5, black queen at f5, black pawn at g5 and white pawn at h5. White pawn at b4, white pawn at c4, black pawn at d4, black pawn at f4 and white bishop at g4. White pawn at e3. White pawn at a2, white bishop at d2 and white pawn at f2. White rook at b1, white queen at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 20. White to move.