hard 8×8 Set 4 Table Grid
8=6=24x7=4=7+2
2=6-1-2-
5=15+2=
7-3=14+5=
1=8=3/67/
2-37=2-1-
2-72=3-1
7=10x19+
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21784653
34651782
63842517
18265374
45378261
57426138
72513846