assume we have 2 eggs and 4 try

from what i understand, the decision tree behind the answer is that

down is break, rigth is survive
4 ----- 7 --- 9
|       |     |
1-2-3   5-6   8

the answer is 9

but if it did not break at 3 or 6 or 8, we know its 1 above it since we already tested 2 above it
so the decision tree should be

5 ----- 9 --- 12
|       |     |
1-2-3   6-7   10

the answer should be 12

im not sure if i misunderstand it or i should put it into issue