r1b2kqr/8/1p1p1n2/p1p3pp/N1N2Pp1/BP2P2P/3P1K2/RQ3B1R b - - 1 21
FEN state: r1b2kqr/8/1p1p1n2/p1p3pp/N1N2Pp1/BP2P2P/3P1K2/RQ3B1R b - - 1 21 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8, black queen at g8 and black rook at h8. Black pawn at b6, black pawn at d6 and black knight at f6. Black pawn at a5, black pawn at c5, black pawn at g5 and black pawn at h5. White knight at a4, white knight at c4, white pawn at f4 and black pawn at g4. White bishop at a3, white pawn at b3, white pawn at e3 and white pawn at h3. White pawn at d2 and white king at f2. White rook at a1, white queen at b1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.