1nb2br1/4n3/r2kpp2/q2p3p/1PpP3p/2P5/P4PP1/1RB1KBNR w K - 0 20
FEN state: 1nb2br1/4n3/r2kpp2/q2p3p/1PpP3p/2P5/P4PP1/1RB1KBNR w K - 0 20 ; Best move: b4a5
The current state of the chess board is: Black knight at b8, black bishop at c8, black bishop at f8 and black rook at g8. Black knight at e7. Black rook at a6, black king at d6, black pawn at e6 and black pawn at f6. Black queen at a5, black pawn at d5 and black pawn at h5. White pawn at b4, black pawn at c4, white pawn at d4 and black pawn at h4. White pawn at c3. White pawn at a2, white pawn at f2 and white pawn at g2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 20. White to move.