r1b1kbn1/6p1/ppn4Q/2p1N3/2Pq1pPP/PP2P3/N2P1K2/R1B2B1R b q - 0 21
FEN state: r1b1kbn1/6p1/ppn4Q/2p1N3/2Pq1pPP/PP2P3/N2P1K2/R1B2B1R b q - 0 21 ; Best move: g8h6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at g7. Black pawn at a6, black pawn at b6, black knight at c6 and white queen at h6. Black pawn at c5 and white knight at e5. White pawn at c4, black queen at d4, black pawn at f4, white pawn at g4 and white pawn at h4. White pawn at a3, white pawn at b3 and white pawn at e3. White knight at a2, white pawn at d2 and white king at f2. White rook at a1, white bishop at c1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.