-
Recent Posts
Recent Comments
Sudent on Ultrahardcore 3 Schlagt Forcin… James on Ultrahardcore 3 Schlagt Forcin… Sudent on Basic Solving With Bob Ha… ociteco on Basic Solving With Bob Ha… Sudent on A Nakex 83 BARN Challenge Archives
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- April 2019
- March 2019
- February 2019
- January 2019
- December 2018
- November 2018
- October 2018
- September 2018
- August 2018
- July 2018
- June 2018
- May 2018
- April 2018
- March 2018
- February 2018
- January 2018
- December 2017
- November 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- December 2016
- November 2016
- October 2016
- September 2016
- August 2016
- June 2016
- May 2016
- April 2016
- March 2016
- February 2016
- January 2016
- December 2015
- November 2015
- October 2015
- September 2015
- August 2015
- July 2015
- June 2015
- May 2015
- April 2015
- March 2015
- February 2015
- January 2015
- December 2014
- November 2014
- October 2014
- September 2014
- August 2014
- July 2014
- June 2014
- May 2014
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
Categories
- Advanced Solving
- Alary
- Barker
- Basic Solving Procedures
- Berthier
- Expert Reviews
- Extreme Solving
- Gordon
- Green
- Hanson
- Heine
- Hobiger
- KrazyDad
- Longo
- Monster
- Nakamoto
- Pitkow
- Puzzle Reviews
- Sheldon
- Sheldon
- Shortz
- Snyder
- Stephens
- Stuart
- Sudoku Toolware
- Sysudoku History
- Tom Sheldon
- Uncategorized
- Weekly Extreme
Meta
Tag Archives: Sudoku BARN
Nakex 183 Hides the Keys
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 →
Posted in Extreme Solving, Nakamoto, Puzzle Reviews
|
Tagged ALS APE, confirming ANL by bv boomer, grouped X ANL, hidden UR 1, J.B.Nakamoto Extreme, Sudoku BARN, WXYZ-wing
|
Leave a comment
Nakamoto Extreme 123 Is, Briefly
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 →
Posted in Advanced Solving, Extreme Solving, Nakamoto
|
Tagged ALS bv boomerang, bypass, coloring traps, J.B.Nakamoto Extreme, Sudoku BARN, XY wraps, XY-chains, XYZ-wing
|
Leave a comment
Sudokuwiki’s Nakamoto Extreme 103
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 →
A Nakex 83 BARN Storming Finish
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 →
Posted in Advanced Solving, Nakamoto, Puzzle Reviews
|
Tagged J.B.Nakamoto Extreme, Shortcut ANL, Sudoku BARN
|
Leave a comment
A Nakex 83 BARN Challenge
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 →
Posted in Extreme Solving, Nakamoto, Puzzle Reviews
|
Tagged AIC ALS nice loop, boomer confirming ANL, J.B.Nakamoto Extreme, Sudoku BARN, XY ANL
|
8 Comments
Sudokuwiki Ends Nakex 63 On Its Own
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 →
Posted in Extreme Solving, Nakamoto, Puzzle Reviews
|
Tagged AIC ANL, AIC nice loop, ALS toxic pair, APE, cell forcing chains, hidden UR type 2, J.B.Nakamoto Extreme, Sudoku BARN, UR strong link
|
Leave a comment
Reviewing a Truly Extreme Collection
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 →
Posted in Advanced Solving, Puzzle Reviews
|
Tagged grouped ANL, hidden UR type 1, J.B.Nakamoto Extreme, spotting boomerangs, Sudoku BARN, UR type 4
|
Leave a comment
Super Fiendish Bookends 67 and 77
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 →
Metcalf’s Second Patterns Game Entry
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 →
Posted in Advanced Solving
|
Tagged grouped AIC boomerang, hidden UR type 1, Sudoku BARN, the patterns game
|
Leave a comment
Another Dave Green Sysudoku Basic Workout
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 →
Posted in Basic Solving Procedures, Green, Puzzle Reviews
|
Tagged Dave Green, hidden dublex, naked triple, Sudoku BARN, ur 1
|
Leave a comment
