r1b1kb2/p1p1pr2/n5p1/p3NpBp/R1pqP1nP/6P1/1P2KP2/1NQ2BR1 b - - 1 21
FEN state: r1b1kb2/p1p1pr2/n5p1/p3NpBp/R1pqP1nP/6P1/1P2KP2/1NQ2BR1 b - - 1 21 ; Best move: d4f2
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at c7, black pawn at e7 and black rook at f7. Black knight at a6 and black pawn at g6. Black pawn at a5, white knight at e5, black pawn at f5, white bishop at g5 and black pawn at h5. White rook at a4, black pawn at c4, black queen at d4, white pawn at e4, black knight at g4 and white pawn at h4. White pawn at g3. White pawn at b2, white king at e2 and white pawn at f2. White knight at b1, white queen at c1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.