Funster Extreme 60 and 74 Go Together

Two brief advanced appearances are reported in this post in review of the Extreme section of Charles Timmerman’s Funster Hard to Extreme Sudoku.

In Extreme 60, the bypass starts with a 3-fill and uses them to solve a big wedge. The remaining line slink marking is easy.


The rest is easy too.  A type 1 unique rectangle is enough for a collapse.






In funster Extreme 74, a less decisive bypass, . . .

. . . is aided by a 6-wing, a form of fish directly signaled by line marking. Regular fish of all sizes are now explained in the Guide as  X-panel  methods, but the X-wing is often spotted in line marking as an alignment of slink marks.

This fish has no victims now, but the fish icons are left in, to exclude 6 candidates from r46c3 and r4c7 in the remaining line marking.







As basic is completed,  this XY-wing and naked pair triggers a collapse









Next in the review is Charles Timmerman’s funster Extreme 88. Next in the Guide is Coloring.


About Sudent

I'm John Welch, a retired engineering professor, father of 3 wonderful daughters and granddad to 7 fabulous grandchildren. Sudoku analysis and illustration is a great hobby and a healthy mental challenge.
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