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Tag Archives: swordfish
Nakamoto 143 Avoids Extremes
Nakex 143, the eighth puzzle in the review, avoids AIC building with an outstanding exhibition of advanced techniques, and three subsets in basic line marking, including this naked triple. Two more show up in LM closing, the stage that examines … Continue reading
A Coloring Tidal Wave Drowns Sufi 37
Here, Brian Challenger’s Super Fiendish 37 makes it to advanced, but with the bi-value field inviting multi-cluster coloring, a systematically easy solving technique. There are some X-panel fruits to harvest first in the order of battle, before coloring closes the … Continue reading
An Ardson Very Hard Workout
This post checkpoints Ardv2 78, the second review puzzle in A.D. Ardson’s Sudoku Very Hard collection. The puzzle skates by basic and the bv scan, but is tamed on the X-panel. Along with regular collection reviewing posts, I’m revising the … Continue reading
More Satisfaction in Saturday 2
This post completes the last hour of the Satisfaction Sudoku tour of Sysudoku, with alternative solution paths beyond the bv scan in Saturday 2. It features a finned X-wing, a coloring wrap, and an alternative freeform pattern analysis with a … Continue reading
THLS Limps In On Chains
This post identifies the conjugacy chain, the last fundamental chain type to be introduced in The Hidden Logic of Sudoku, as a weakened X-chain. Since the last few chapters introduce extensions for XY chains, it becomes clear that THLS is … Continue reading
Posted in Advanced Solving, Berthier
Tagged c-chains, color wrap, Denis Berthier, near BUG, nice loop, remote pair, Reverse XY chains, swordfish, The Hidden Logic of Sudoku, uniqueness, X-chains
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Advanced Solving with Arnold
This post reviews the 54 pages of Arnold Snyder’s Sudoku Formula 3 devoted to advanced solving techniques. These are sandwiched between 35 pages that repeat his Sudoku Formula 2, and 19 pages on how to get the solution by arbitrary … Continue reading
Posted in Advanced Solving, Expert Reviews, Snyder
Tagged Arnold Snyder, Sudoku Formula 3, swordfish, unique rectangle
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Wex 429 is Sued
In the review of a sequence of 10 Weekly Extreme Competition puzzles, Wex 429 is toppled by an easily verified Sue de Coq. The post begins with a checkpoint for the reader’s own solution of Wex 428 by single alternate … Continue reading
Sue Defeats the Slippery Wex 428
The third Weekly Extremes review puzzle is another rewrite, in which an extreme level pattern analysis is made unnecessary by an advanced technique overlooked at first reading. Taxes in? On the review, Wex 428 was easy on us through basic … Continue reading
The Peter Gordon Fishing Guide
We leave November and basic solving with a review of Peter Gordon’s advanced solving recommendations in his Mensa® Guide to Solving Sudoku, now re-issued as the PuzzleWright Guide etc. After a brief summary of the Guide’s general failings, this post … Continue reading
Posted in Advanced Solving, Expert Reviews, Gordon
Tagged finned fish, Gordon Guide, kraken fish, mutant fish, Peter Gordon, sashimi fish, swordfish, X-wing
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Shortz’ Ferocious Hall of Mirrors
This post recounts the solving of Beware 190, the review puzzle from Will Shortz’ collection book Ferocious Sudoku which has multiple solutions. On another multiple solution puzzle, Frank Longo’s Absolutely Nasty Level 4 puzzle 61(Review Snaps II 3/12/13), I used … Continue reading
