Nakamoto Extreme 3 Exits in Full Color

This post continues the Sysudoku report and supplemented Sudokuwiki solution of Nakex 3.

We pick up from last week with matching  8 pairs in E and SE.

The starting slink has been available since Sudokwiki entered AIC building, but new bv now enable the bv boomer placing SE8.

After a follow up of




we get this example of coloring support in AIC building. Instead of the grouped return of the boomerang found by Sudokuwiki, the cluster provides the more direct and more easily spotted shortcut slink in red. There is a slink of blue 4 with every green candidate on the grid. If blue 4r1c7 is false, all blue candidates are false and all green candidates are true.


Adding a modest red/orange cluster, there is immediate evidence in r1 and NE that red and orange are not both true. By logic,

not (orange and green)

=> red or blue.

9r2c8 sees red and blue 9’s, a bridge removal, which colors 9r3c7 orange, trapping 9r3c2.

Unlike Sysudoku grids, Sudokuwiki does not remember clusters.

While you’re contemplating that, here’s a shortcut to Sudowiki’s green wrap on the next move. Here we start AIC building from 4r3c1, that would do it. All we need is a force of any green candidate, because blue 4 will also force that candidate for an ANL.

Tell’m where you got it.



It’s a testament to Nakamoto Extreme toughness that any more is needed, but . . .

red 5r3c7 forces removals in c3.







And these wrap red in c7, for the immediate collapse of Nakamoto Extreme 3, in orange and blue.








Next week a Sudokuwiki path is followed through Nakamoto Extreme 23, until a Sudowiki boomerang is modified for a coloring wrap. A second post will continue  the longer Sudokuwiki path to re-interpret one of its successful moves for better human spotting. Get the book, but if you’re not ready for that, prepare for patience by doing what you can.


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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