r4b1r/1P4pp/2np4/1NBPpkp1/Q1P1n1bP/8/P3P2R/R2K1B2 b - - 2 21
FEN state: r4b1r/1P4pp/2np4/1NBPpkp1/Q1P1n1bP/8/P3P2R/R2K1B2 b - - 2 21 ; Best move: a8a4
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at h8. White pawn at b7, black pawn at g7 and black pawn at h7. Black knight at c6 and black pawn at d6. White knight at b5, white bishop at c5, white pawn at d5, black pawn at e5, black king at f5 and black pawn at g5. White queen at a4, white pawn at c4, black knight at e4, black bishop at g4 and white pawn at h4. White pawn at a2, white pawn at e2 and white rook at h2. White rook at a1, white king at d1 and white bishop at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.