Tag Archives: Sudoku BARN

Nakex 183 Hides the Keys

Posted on April 21, 2020 by Sudent

The last review puzzle, Nakamoto Extreme 183, follows the collection’s pattern of hiding easier removals behind methods that are very difficult to spot. An effective defense is to maintain bv maps, X-panels, and coloring clusters carefully as more advanced results … Continue reading →

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Nakamoto Extreme 123 Is, Briefly

Posted on March 31, 2020 by Sudent

Nakex 123 limps into AIC building briefly,  then succumbs to Sudokuwiki XY chains, simple coloring traps,  a coloring bridge and an outstanding BARN. Here is the grid at the end of a bypass exceptional among Nakamoto Extreme puzzles. The slink … Continue reading →

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Sudokuwiki’s Nakamoto Extreme 103

Posted on March 17, 2020 by Sudent

After Sysudoku Basic, this post describes the Sudokuwiki advanced and AIC solution path on Nakex 103. The next post reports an alternative path shortened significantly by a freeform pattern analysis. Nakex 103 starts a little differently, with some bypass success: … Continue reading →

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A Nakex 83 BARN Storming Finish

Posted on March 10, 2020 by Sudent

This post details the unusual finish of Nakamoto Extreme 83, with three more interdependent BARN’s, well assisted by Medusa coloring. From the first cluster trap and BARN, further expansion and the aligned triple continue to move Nakamoto Extreme 83 towards … Continue reading →

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A Nakex 83 BARN Challenge

Posted on March 3, 2020 by Sudent

Nakamoto 83 earns its Extreme badge by an extremely tough Basic, and resistance to anything short of AIC building. It ends with an expanding cluster, accelerated by a series of BARNs. This post brings you to the first one, and … Continue reading →

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Sudokuwiki Ends Nakex 63 On Its Own

Posted on February 25, 2020 by Sudent

This post picks up on the Sudokuwiki/Sysudoku resolution of Nakamoto Extreme 63 where it was overtaken by pattern analysis and coloring, and finishes it in two ways, one humanly practical and one not. Sudokuwiki doesn’t maintain coloring clusters between moves, … Continue reading →

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Reviewing a Truly Extreme Collection

Posted on January 14, 2020 by Sudent

This post and the next initiate a review of Sudoku Puzzle Book, Extreme Level by J. B. Nakamoto, with Nakex 3. The review combines moves by Andrew Stuart’s Sudokuwiki solver with Sysudoku alternatives, while reporting and interpreting moves in accordance … Continue reading →

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Super Fiendish Bookends 67 and 77

Posted on December 31, 2019 by Sudent

This post steps through the most fiendish of the 10 puzzles preselected for the review of Brian Challenger’s Super Fiendish Sudoku, SF 67. , and then adds one of the bypass victims, SF 77. Looking at the trace, you might … Continue reading →

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Metcalf’s Second Patterns Game Entry

Posted on November 26, 2019 by Sudent

This post reports a Sysudoku solution path for Mike’s second Patterns Game entry on a extraordinary pattern of givens. As a successful entry, I believe it had to meet the contest requirement for a simpler solution than is found here. … Continue reading →

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Another Dave Green Sysudoku Basic Workout

Posted on October 8, 2019 by Sudent

This post details  another Sunday Dave Green 5-star coming ever so close to breaking the limit that Dave seems to impose on his Sunday puzzles. It appeared in the 9/15/2019 edition of the Akron Beacon Journal. My grid is unimpressed … Continue reading →

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