You lost 4 but you don't loose anymore
You won 6 and you keep on winning more games.
Since you don't loose anymore games, in the ratio 2:1, you would replace the "1" with 4 and replace the 2 with 6+n.
the ratio is currently 6+n:4
Note that (6+n) has to be twice as much as 4.
The number twice as much as 4 is 8
therefore, 6+n is 8
and n = 2
You would have to win 2 more rounds.
