bn2rbnr/p1p2k1p/6p1/1pP1p3/3pqpPP/1P1PPP2/P1NB3Q/R2K1B1R b - - 0 21
FEN state: bn2rbnr/p1p2k1p/6p1/1pP1p3/3pqpPP/1P1PPP2/P1NB3Q/R2K1B1R b - - 0 21 ; Best move: e4f3
The current state of the chess board is: Black bishop at a8, black knight at b8, black rook at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black king at f7 and black pawn at h7. Black pawn at g6. Black pawn at b5, white pawn at c5 and black pawn at e5. Black pawn at d4, black queen at e4, black pawn at f4, white pawn at g4 and white pawn at h4. White pawn at b3, white pawn at d3, white pawn at e3 and white pawn at f3. White pawn at a2, white knight at c2, white bishop at d2 and white queen at h2. White rook at a1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.