CHRONO

55 s.

Additions à trous (a + b + ? = s <= 20).

CHRONO

0 s.
4 + 8 + = 20
5 + 4 + = 12
3 + 6 + = 11
5 + 4 + = 16
2 + 7 + = 10
6 + 3 + = 13
8 + 7 + = 20
6 + 3 + = 16
4 + 8 + = 15
9 + 6 + = 16
1 + 2 + = 11
2 + 4 + = 12
2 + 5 + = 9
1 + 8 + = 16
4 + 7 + = 16
1 + 6 + = 8
9 + 1 + = 15
5 + 8 + = 18
8 + 5 + = 18
1 + 4 + = 12