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Sh4
top1465.398.27
Sh4 r2c1 ISN'T 8: 4-long hidden set in column 1 involving rows 2,4,7,8 r7c1r8c1r2c1r7c1r8c1r4c1r7c1r8c1r2c1 r7c1#1r8c1#1r2c1#3r7c1#3r8c1#3r4c1#4r7c1#4r8c1#4r2c1#8
Sh4 r4c1r7c1r8c1r7c1r8c1r2c1r8c1r2c1r4c1