Tag Archives: finned X-wing

Classic 48 Gets to the Crayons


The second Classic of Forest’s Classic Sudoku book 30 is a strategic win for Sysudoku Advanced. X-panel keys unlock an imbalanced web of 3, 6 and 8 candidates, allowing coloring clusters to carve it into four armies, which merge and … Continue reading

Posted in Advanced Solving, Puzzle Reviews | Tagged , , , , , , , | Leave a comment

A Timely Finned Fish in funster Extreme 88


Continuing the review of Charles Timmerman’s funster Hard to Extreme Sudoku, with Extreme 88. The basic compensates for a modest  bypass with a favorable line marking. A naked single early and a finned 2-wing late. Finned fish is a topic … Continue reading

Posted in Puzzle Reviews | Tagged , , , , | Leave a comment

Coloring Dominates Very Hard III-15


The review of Moito’s Road to Mastery Sudoku continues with another example of early coloring and its cooperative interactions with the X-panel. The advanced path is similar to that of Very Hard I-35 two posts back, but this time coloring … Continue reading

Posted in Advanced Solving, Puzzle Reviews | Tagged , , , , , | Leave a comment

Cluster Extension by Not-Both Trials


In this post and the next, the first puzzle of the Manuel Castillo Only Extreme Sudoku review, Only Extreme 3,  is taken ahead of the review of his Only Hard Sudoku. The reason is in the title. Rounding out the … Continue reading

Posted in Advanced Solving, Puzzle Reviews | Tagged , , , , , , , , , , | Leave a comment

Longo’s Nastiest Ever After


This post finishes the illustrative review of Frank Longo’s The Nastiest Sudoku Book Ever, with review puzzles 673, 684, 695 and 706. The bv scan and occasional easy coloring continue to be enough for what Frank claimed to be the … Continue reading

Posted in Longo, Puzzle Reviews | Tagged , , , , , , , | 2 Comments

The Olive Side of Fata Morgana


This post illustrates with Fata Morgana the practice of taking both sides of a trial, to be sure that a contradiction is found. The pink trial led to the solution. Fully expecting a contradiction, the olive trial begins with the … Continue reading

Posted in Extreme Solving, Monster | Tagged , , , , | Leave a comment

Finishing More Extreme 200


This post continues, slicing the 9 patterns of More Extreme 200, and conducting trials of the divided sets. A brief, but decisive cluster merge ends the struggle. Antoine was right. #200 is outstanding. Following a pink/olive analysis on the 9 … Continue reading

Posted in Alary, Extreme Solving, Puzzle Reviews | Tagged , , , , , , | Leave a comment