Number Island
Archive
Stats
Easy
Medium
Long
Number Island
/
Archive
/
Hard
Hard · 2026-08-13
Form groups of adjacent cells (above, below, left, or right) that add up to:
3
13
5
3
8
24
10
0
1
0
0
8
4
2
0
0
5
5
0
4
3
0
0
0
8
8
6
9
1
6
9
9