1nbq1br1/1r2kpp1/2pp2p1/1B2pn2/2PP4/Np2P2N/1B3PPP/R2K3R b - - 0 21
FEN state: 1nbq1br1/1r2kpp1/2pp2p1/1B2pn2/2PP4/Np2P2N/1B3PPP/R2K3R b - - 0 21 ; Best move: g8h8
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black rook at b7, black king at e7, black pawn at f7 and black pawn at g7. Black pawn at c6, black pawn at d6 and black pawn at g6. White bishop at b5, black pawn at e5 and black knight at f5. White pawn at c4 and white pawn at d4. White knight at a3, black pawn at b3, white pawn at e3 and white knight at h3. White bishop at b2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.