r2nkbnr/p2qpp2/b7/1p2p1p1/3p2P1/P2B1P2/RPP1N3/1NB1K1QR w q - 0 20
FEN state: r2nkbnr/p2qpp2/b7/1p2p1p1/3p2P1/P2B1P2/RPP1N3/1NB1K1QR w q - 0 20 ; Best move: h1h8
The current state of the chess board is: Black rook at a8, black knight at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at d7, black pawn at e7 and black pawn at f7. Black bishop at a6. Black pawn at b5, black pawn at e5 and black pawn at g5. Black pawn at d4 and white pawn at g4. White pawn at a3, white bishop at d3 and white pawn at f3. White rook at a2, white pawn at b2, white pawn at c2 and white knight at e2. White knight at b1, white bishop at c1, white king at e1, white queen at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. White to move.