hard 9×9 Set 4 Table Grid
2/67/74=4.5/5=8=
5/1.33/7=8=6=2=9=
2.67/4=9=1=2/32=7=5=5
9=5=8=2=1=7=6=4=
2/8=6=9=7=5=4=3=
5=6=2=1.13/4=3=31=7=
7=8=1.5/1.5/9=1=
4=2=1.4/1.67/9=1=2.67/6=
1.29/61.5/1=5=8=2=
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631742958
154378629
849163275
395821764
218697543
562984317
783256491
427539186
976415832