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Master · 2026-08-15
Form groups of adjacent cells (above, below, left, or right) that add up to:
21
13
1
4
49
6
9
7
7
6
17
6
7
6
0
9
4
0
1
0
8
0
0
0
0
0
9
0
0
4
0
6
2
6
0
9
0
0
9
6
4
7
4
0
7
9
7
6
7
1
0
4
8
3
0
9
7
8
6
1
8