Number Island
Archive
Stats
Easy
Medium
Long
Number Island
/
Archive
/
Master
Master · 2026-08-13
Form groups of adjacent cells (above, below, left, or right) that add up to:
21
11
9
5
2
26
5
11
1
1
9
2
2
0
7
0
9
8
3
3
0
4
9
0
5
2
9
0
0
0
0
3
9
5
2
0
1
5
7
5
0
0
0
6
1
6
7
9
2
2
0
0
0
1
0
0
1
2
5
4