r1bq1knr/1ppppB2/6p1/8/1P1PP3/n1N4P/P2Q1PPR/RN3K2 b - - 3 21
FEN state: r1bq1knr/1ppppB2/6p1/8/1P1PP3/n1N4P/P2Q1PPR/RN3K2 b - - 3 21 ; Best move: f8f7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7 and white bishop at f7. Black pawn at g6. White pawn at b4, white pawn at d4 and white pawn at e4. Black knight at a3, white knight at c3 and white pawn at h3. White pawn at a2, white queen at d2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1 and white king at f1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.