r2q2nr/pb1nkp2/1pp3p1/3pp1Np/P1Pb2PP/1P1P4/3BPP2/2RQKB1R b K - 0 20
FEN state: r2q2nr/pb1nkp2/1pp3p1/3pp1Np/P1Pb2PP/1P1P4/3BPP2/2RQKB1R b K - 0 20 ; Best move: h5g4
The current state of the chess board is: Black rook at a8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, black knight at d7, black king at e7 and black pawn at f7. Black pawn at b6, black pawn at c6 and black pawn at g6. Black pawn at d5, black pawn at e5, white knight at g5 and black pawn at h5. White pawn at a4, white pawn at c4, black bishop at d4, white pawn at g4 and white pawn at h4. White pawn at b3 and white pawn at d3. White bishop at d2, white pawn at e2 and white pawn at f2. White rook at c1, white queen at d1, white king at e1, white bishop at f1 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.