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Tag Archives: finned X-wing
Brian Challenger’s Super Fiendish 7
The review of Challenger’s Super Fiendish collection opens with a long post, revisiting some advanced methods not seen here recently. Somewhat fiendish is the stonewalling in basic. The bypass gets nowhere, and the hidden triple alone removes candidates. Here is … Continue reading
Posted in Advanced Solving
Tagged Brian Challenger, finned X-wing, hidden triple, Super Fiendish Sudoku, XY ANL, XY-wing
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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
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
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
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
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
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 Fata Morgana, finned X-wing, pink olive trial, post solution trial, trial trace
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