rk1nq1nr/6b1/3p3p/pP1pppp1/2N1P1bQ/PPB2P1P/4B1PR/R3K1N1 b Q - 2 20
FEN state: rk1nq1nr/6b1/3p3p/pP1pppp1/2N1P1bQ/PPB2P1P/4B1PR/R3K1N1 b Q - 2 20 ; Best move: g5h4
The current state of the chess board is: Black rook at a8, black king at b8, black knight at d8, black queen at e8, black knight at g8 and black rook at h8. Black bishop at g7. Black pawn at d6 and black pawn at h6. Black pawn at a5, white pawn at b5, black pawn at d5, black pawn at e5, black pawn at f5 and black pawn at g5. White knight at c4, white pawn at e4, black bishop at g4 and white queen at h4. White pawn at a3, white pawn at b3, white bishop at c3, white pawn at f3 and white pawn at h3. White bishop at e2, white pawn at g2 and white rook at h2. White rook at a1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 2. Full move number is 20. Black to move.