r1b2bnr/1p1p1k1p/2p2pp1/p1P1pP2/P5P1/NPB2q1P/R2nP2R/4KB2 b - - 0 21
FEN state: r1b2bnr/1p1p1k1p/2p2pp1/p1P1pP2/P5P1/NPB2q1P/R2nP2R/4KB2 b - - 0 21 ; Best move: f3f1
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7, black king at f7 and black pawn at h7. Black pawn at c6, black pawn at f6 and black pawn at g6. Black pawn at a5, white pawn at c5, black pawn at e5 and white pawn at f5. White pawn at a4 and white pawn at g4. White knight at a3, white pawn at b3, white bishop at c3, black queen at f3 and white pawn at h3. White rook at a2, black knight at d2, white pawn at e2 and white rook at h2. White king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.