rn1k1bnr/p6p/1qpp1pp1/6P1/1PQ1P1b1/7P/1PNP2B1/R1B1K1NR b K - 0 20
FEN state: rn1k1bnr/p6p/1qpp1pp1/6P1/1PQ1P1b1/7P/1PNP2B1/R1B1K1NR b K - 0 20 ; Best move: g4h5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7 and black pawn at h7. Black queen at b6, black pawn at c6, black pawn at d6, black pawn at f6 and black pawn at g6. White pawn at g5. White pawn at b4, white queen at c4, white pawn at e4 and black bishop at g4. White pawn at h3. White pawn at b2, white knight at c2, white pawn at d2 and white bishop at g2. White rook at a1, white bishop 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 0. Full move number is 20. Black to move.