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Tag Archives: XY nice loop
Super Fiendish 17 and 27
Two of Brian Challenger’s Super Fiendish, 17 and 27, are put together because solution paths are short. Stage right is the Sufi 17 line marked grid with an immediate, and decisive, XY nice loop. The follow up features an early … Continue reading
Posted in Puzzle Reviews
Tagged Brian Challenger, bypass trace, naked triple, Super Fiendish Sudoku, XY nice loop
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The FTSPAH Review Begins With a Tour
Here I report on 4 and 24, the first two of 10 puzzles selected for the Sysudoku review of the FTSPAH puzzle book. Starting grids were displayed at the end of last week’s post. I also explain a few things … Continue reading
Posted in Advanced Solving, Basic Solving Procedures, Puzzle Reviews
Tagged 3-fill, coloring, FTSPAH, X-chain ANL, XY ANL, XY nice loop
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Lucky Panda 240 Rides Nice Loop Coloring
The candidates of a nice loop form a coloring cluster. This review puzzle from the Lucky Panda Sudoku review illustrates a decisive nice loop coloring. Two hidden UR 2 show up as well. After a productive bypass and box marking, … Continue reading
A funster Extreme 116 Labor Day Special
An effective bypass, and a simple uniqueness rectangle, and three choices to close down funster Extreme 116 early. Charles Timmerman’s funster Extreme collection is less than extreme, but a good introduction to advanced solving methods. The basic work is easy, … Continue reading
Funster Extreme 46 Not So Much
The review of Charles Timmerman’s funster Hard to Extreme Sudoku continues with Extreme 46. It’s entertainingly advanced. Extreme 46 has its moments. The basic trace is spread across the page with 3-fill after 3-fill. Two unusual events occur in box … Continue reading
Only Not Extreme 46
The review of Castillo’s Only Extreme collection continues with Only Extreme 46. A very extensive bypass is survived, to leave very little to add in box marking, and an interesting line marking. The rest is murder by the usual suspects … Continue reading
Closing Very Hard v.2 with the Real 38
To be fair, here is my do over of the real Ardv2 38, the one with a given 7 in r7c6. My omission of it hatched a productive distraction, having no bearing on the collection it came from. The basic … Continue reading
Posted in Advanced Solving, Puzzle Reviews
Tagged A.D. Ardson, coloring wrap, nice loop coloring, UR Type 3, Very Hard Sudoku, XY nice loop
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