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Master · 2026-11-10
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Form groups of adjacent cells (above, below, left, or right) that add up to:
15
8
21
10
9
16
31
8
4
6
5
5
0
8
0
1
7
0
0
0
7
0
1
5
9
0
8
8
3
0
8
4
0
0
6
5
0
0
0
2
9
0
2
2
1
0
0
1
8
0
0
6
0
0
7
4
0