hard Set 27 Table Grid
2=4=7=2-
16+4=2-12+14+
4=71=6=11+
7=5=14+3=
1=20+7=3=3
13+21+2-12+
1-14+
26+2=21=13+
Show solution
23471586
82347651
47165238
71658342
16582473
34716825
65823714
58234167