r2q1bn1/2pbpkpr/1p3p2/3p2p1/p2NPP2/PP1P2QP/2PB2BR/1R2K1N1 b - - 10 21
FEN state: r2q1bn1/2pbpkpr/1p3p2/3p2p1/p2NPP2/PP1P2QP/2PB2BR/1R2K1N1 b - - 10 21 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black knight at g8. Black pawn at c7, black bishop at d7, black pawn at e7, black king at f7, black pawn at g7 and black rook at h7. Black pawn at b6 and black pawn at f6. Black pawn at d5 and black pawn at g5. Black pawn at a4, white knight at d4, white pawn at e4 and white pawn at f4. White pawn at a3, white pawn at b3, white pawn at d3, white queen at g3 and white pawn at h3. White pawn at c2, white bishop at d2, white bishop at g2 and white rook at h2. White rook at b1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 10. Full move number is 21. Black to move.