rn3k1r/pbq2Bpp/8/1pp1P3/1P3Nn1/b3PP2/P1P4P/R1BK1NR1 b - - 0 21
FEN state: rn3k1r/pbq2Bpp/8/1pp1P3/1P3Nn1/b3PP2/P1P4P/R1BK1NR1 b - - 0 21 ; Best move: b7f3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8 and black rook at h8. Black pawn at a7, black bishop at b7, black queen at c7, white bishop at f7, black pawn at g7 and black pawn at h7. Black pawn at b5, black pawn at c5 and white pawn at e5. White pawn at b4, white knight at f4 and black knight at g4. Black bishop at a3, white pawn at e3 and white pawn at f3. White pawn at a2, white pawn at c2 and white pawn at h2. White rook at a1, white bishop at c1, white king at d1, white knight at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.