Collection Reviews

Dave Green Basic

  • 10/14/14   Green Pastures        
  • 10/21/14   Basic by Our Fingernails       
  • 10/28/14   Just One More Dave Green
  • 10/04/16   Green’s Labor Day Weekend Workout 
  • 10/11/16   Green’s Labor Day Sunday 5-Star
  •   7/18/17   Dave Green’s Three Column Bypass 3-Fill
  • 10/08/19   Another Dave Green Sysudoku Basic Workout
  •   5/25/21  Two Dave Green 4-Fills
  •   2/22/22  All the Way With Dave
  •   3/01/22  4-Fills Lead Off on a Dave Green Surprise
  •   3/08/22  Doing Every 4-Fill
  •   3/15/22  Dave Defies the Bypass on a July Saturday
  •   3/22/22  Dave’s Octuplet  
    • 3/29/22  Sysudoku Basic Subsets in a Sunday 5-Star

More Basic After Dave

  •   4/05/22  A Hidden Triple From Hidden Logic
  •   4/12/22  The First Beacon Journal CREATORS Gold
  •   4/19/22  Three Ways to Bypass an ABJ CREATORS
  •   4/25/22  Backing up a 5-Fill
  •   5/03/22  An ABJ Bronze with Many 4-Fill Bypass Traces
  •   5/10/22  Box Marking Subsets Maintain a CREATORS Collapse
  •   5/17/22  A Hard, But Bypassed Kampbelmann 50
  •   5/24/22  Naked Pairs Carry the Ball in Hard 134
  •   5/31/22  A Harder Kampbelmann, Barely Basic
  •   6/07/22 A Washington Post ****** Basic
    •   6/14/22 A Kampbelmann Hard With Bypass Coloring
  •   6/21/22 A Filling USA Today Weekend 5-Star
  •   6/28/22 An AndrewsMcMeel 6-Star Sample 4-fills Out
  •   7/05/22 Bring Your Boxline for Wxtreme Hard 1505
  •   7/12/22 Closing With the Hidden Dublex
  •   7/19/22 Sysudoku Home Page

Tom Sheldon’s Master Class
2/05/13   Grading the Master Class
2/19/13   Snapshots from Sheldon’s Master Class 30 Update

  • Frank Longo’s Absolutely Nasty Level 4
  • 2/26/13   Absolutely Nasty Level 4 Review
  • 3/05/13   Absolutely Nasty 4 Review Snaps I
  • 3/12/13   Absolutely Nasty 4 Review Snaps II

Paul Stephens
5/28/13   Paul Stephens’ Extremes Review
6/04/13   Stephens Extremes Snapshots I
6/11/13   Stephens’ Extremes Snaps II
6/18/13   Stephens’ Extremes Snaps III

Will Shortz Ferocious, Trickiest
6/25/13   Shortz’ Ferocious Falls Short
7/02/13   A Ferocious Hall of Mirrors
7/09/13   Shortz’ Trickiest Bewares?

KrazyDad SuperTough

  •   3/19/13   KrazyDad Super Tough Review 
  •   3/26/13   KrazyDad Super Tough Snapshots  
  •   4/02/13   KrazyDad Super Coloring
  •    6/01/21  KrazyDad Supertough 515 Starts a Review Update
  •    6/08/21  KrazyDad SuperTough 525 Review Update
  •    6/15/21  KrazyDad SuperTough 535 Trips on a Basic X-Wing
  •    6/22/21  KrazyDad SuperTough 545 Wraps Up Fast
  •    6/29/21  KrazyDad SuperTough 555
  •   7/06/21   SuperTough 565 Wrapped Twice
  •   7/13/21   KDST Highlights Box Marking
  •   7/20/21   KDST 585 Favors the Bypass and Coloring
  •   7/27/21   A KDST 595 Hidden Weakness
  •   8/03/21   Coloring KDST 5 10 5 Is Too Easy

KrazyDad Insane
7/16/13   The Insane Review Begins
7/23/13   Insane 425 Introduces the Boomerang
7/30/13   Insane 425 Finishes with the Pink Olive
8/06/13   Insane 435 By Irregular XYZ and ANL
8/13/13   An Insane 445 Pattern Slicing Demo
8/20/13   Insane 455 Colors with Pink Olive Crayons
8/27/13   Nice Loop Coloring of Insane 465
9/03/13   A Sudokuwiki Resolution of Insane 475
9/17/13   Trials on Insane 475
9/24/13   Sudokuwiki Finds a Boomerang
10/01/13 KD Insane 485 One Clue Better
10/08/13   A Boomer Inspired Pattern Trial in 495
10/15/13   4X5 Holds Off LPO for a Pattern Trial
10/22/13   An Insane Review is Completed

Xaq Pitkow Sudoku v.3
1/07/14   Polishing Pages and Posts for 2014
1/14/14   Xaq Pitkow’s Expert Collection
1/21/14   Pitkow’s Grand Master Sudoku
1/28/14   Advancing through GM 5
2/02/14   The Orphans of GM 95
2/11/14   Pitkow’s Super Grand Masters
2/18/14   Two Colorful Super Grand Masters

Nikoli X-treme Sudoku
9/09/14 Nikoli’s X-treme Sudoku
9/16/14 The Empathy of Nikoli Composers?
9/23/14 X-treme Hidden and Naked Treasures

Wayne Gould’s Fiendish Sudoku
11/04/14   Gould’s Not So Fiendish
11/11/14   Fiendish NPM Wins and Loses
11/18/14   The Fiendish 100 BUG-gy Maze

Frank Longo’s Gordon Guide Collection
1/27/15 Gordon Guide Puzzle Review
2/03/15   Gordon Guide 775 Concluded

Antoine Alary More Extreme
2/10/15   How Extreme is More Extreme?
2/17/15   A Little More Extreme
2/24/15   Alary at His Stingiest
3/03/15   Smooth Navigation in Rocky Terrain
3/10/15   Just One More “More Extreme”
3/17/15   Taking on More Extreme 200
3/24/15   Finishing More Extreme 200
5/05/15   Fick Tricks More Extreme

Weekly Extreme Competition
3/31/15   Weekly Extreme 426 Trials
4/07/15 A Colorful Verification Creams Wex 427
4/14/15   Sue de Coq Defeats a Slippery Wex 428
4/21/15   Wex 429 is Sued
4/28/15   Wex 430 Bewitched by Sue de Coq 200
5/12/15   Wex 431 Slips by Sue, but is Caught
5/19/15   Two More Weekly Extremes Join Sue’s Parade
5/26/15   Tracing Exercise with Wex 434
6/02/15   The ALS Jump Ball
6/09/15   Closing the Weekly Extreme Review
7/21/15 Revisiting Wex 435

Longo’s Nastiest Ever
1/19/16   Longo’s Nastiest Collection
1/26/16   Longo’s Nastiest Ever Party II
2/02/16   Tough, But Not So Nasty
2/09/16   Longo’s Nastiest Ever After

Djape Hard Sudoku
3/15/16   Djape’s Only Hard Sudoku

A.D. Ardson Very Hard v.2
4/18/17   An Ardson Truly Hard Collection
4/25/17   An Ardson Very Hard Workout
5/02/17   Ardson Not So Hard Ardv2 118
5/17/17   Ardson Very Hard v.2 158
5/23/17   Ardson Very Hard v.2 198 and 238
5/30/17   Another Look at Ardson Very Hard v.2 38
6/06/17   Ardson Very Hard v.2 278, Plus 38 Comments
6/13/17   Ardson Very Hard v.2 318
6/20/17   A Little Harder Ardson v2. 358
6/27/17   A Very Hard Finale with Ardv2 398
7/04/17   Closing Very Hard v.2 with the Real 38
7/11/17   Slink vs. Coloring Networks and Illogical Sudoku
02/06/18  A.D. Ardson Sudoku Diabolical
02/13/18  The Bypass 3-fill Smacks Diabolical 350
02/20/18 Ardson’s Toughest, Even Slightly Diabolical, 310
02/27/18 An Unexpected Challenge from TV Times

Rebecca Bean 600 Extremely Hard Sudoku
7/25/17   Bean’s Extremely Hard I
8/01/17   Two of Bean’s Less Extreme
03/06/18 The Vol 10 Rebecca Bean Extremely Hard Sudoku
03/13/18 Almost Extreme Bean ExHdv10 II-29
03/22/18 Colorful Trials for Bean’s Extremely Hard v.10
03/27/18 Bean Gets No Second Extreme
04/03/18 Departing Highlights on Bean’s Extremely Hard Sudoku
07/23/19 PencilPress Bottom Right 9 and Bean VI-24

David Badger 1001 Sudoku Hard
8/15/17   David Badger’s 1001 Hard Sudoku
8/22/17   Badger’s Advanced Sudoku

Castillo Only Hard and Only Extreme
3/29/16   Castillo’s Only Hard Sudoku
9/12/17   A Well Hidden Pair in Only Hard 128
9/18/17   Bookends of the Only Hard
10/03/17   An Advanced Path on Only Extreme 3
10/10/17   Only Not Really Extreme 46
10/17/17   Only Extreme 89 Guilty on Two Counts
10/24/17   Only Extreme 132 Joins the Extreme Team
10/31/17   Almost Extreme 175 Tags Five Advanced Bases
11/07/17   Only Extreme 218 Straight Up
11/14/17   Only Extreme 218 by SASdC Trial
11/21/17   Pattern Coloring and Not-Both on Only Extreme 261
11/28/17   Definitely Extreme 304
12/05/17   Dragging in Only Extreme 304
12/12/17   Only Extreme 347 Demands a Color Trial?
12/19/17   Only Extreme 390 – a Fitting Finale

Moito Sudoku Road to Mastery
1/08/18 Moito’s Road to Sudoku Mastery
1/15/18 Moito’s i-4 Inspires a Trace Refinement
1/16/18 How not to find a Multiple on Moito’s Road
1/23/18 Coloring Dominates Very Hard III-15
1/30/18 Coloring Bails Out Basic on III-34
7/30/19 PencilPress Bottom Right 17 and Moito III-4

World’s Hardest Sudoku

5/01/18 The World’s Most Over-Titled Sudoku Book
5/15/18 Andrew’s Solver Tames Worlds 200
5/22/18 A Colorful Endin to World’s Hardest 200
5/29/18 LPO Knocks Out World’s Hardest 36
6/05/18 World’s Hardest 65
6/12/18 Coloring Wrings Out World’s Hardest 102
6/19/18 An Untyped UR Rattles World’s Hardest 188
6/26/18 Two More Basic Losses for the World’s Hardest
7/03/18 Painting a World’s Hardest BARN

Funster Hard to Extreme Sudoku
7/10/18 A Guide Update and a Funster Kick Off
7/17/18 Funster Extreme 4 has a Near BUG
7/24/18 Funster Extreme 18 Stays In the Lines
7/31/18 Early Coloring on Funster Extreme 32
8/08/18 Funster Extreme 46 Not So Much
8/14/18 Funster Extreme 60 and 74 Go Together
8/21/18 A Timely Finned Fish in Funster Extreme 88
8/28/18 Funster Extreme 102 Goes BOGO
9/04/18 A Funster Extreme 116 Labor Day Special
9/11/18 Funster Extreme 130 Falls in Line Marking

Will Shortz’ Hard Sudoku v.1
10/02/18 A Challenging Exercise in Sysudoku Basic
10/09/18 Chute Filling Beware 115
10/16/18 Hard Beware 125 Bypass
10/23/18 Three Basic Phases on Beware 135
10/30/18 It’s the Bypass in Hard Sudoku v1 145
11/06/18 Be Especially Aware 155
11/13/18   A Hidden Single Dispatches Beware 165
11/20/18 Beware 175 Follows Suit
11/27/18 Beware 185 Finished in Line Marking
12/01/18 Beware 195 Ends a Basic Review

KrazyDad Insane Review Update
12/11/18 KD Insane 415 Updated
12/18/18 The KD 425 Boomerangs
12/25/18 KrazyDad Insane 425 Introduces Pattern Slicing
1/01/19 Books 3 nd 4 in the KD Insane Review
1/08/19 The Insane 455 Pink/Olive Pattern Trial
1/15/19 The Especially Nice Loop of KD Insane 465
1/22/19 Insane 475 by Sudokuwiki and SASdC
1/29/19 KD Insane 485 Introduces the ALS Boomerang
2/05/19 Sudokuwiki Gets a Second Chance
2/12/19 A Pink Pattern Trial on Insane 495
2/19/19 KD Insane 4X5 Caps the Review

James Forest’s Classic Sudoku
2/26/19 Reviewing James Forest’s Classic Sudoku
3/05/19 Classic 48 Gets to the Crayons
3/12/19 An XY Playground in Classic 72
3/19/19 Classic 96 and 120 Solved in Basic
3/26/19 A Classic Insane 144
4/02/19 A Colorful Finish on Classic 144
4/09/19 Classic 168 and Updated Only Extreme 89
4/16/19 Classic 192 and Updated Only Extreme 3
4/23/19 Classic 216 Bypassed and Only Extreme 132 Demoted
4/30/19 Classic Review Ends, OnEx 261 Escapes Trials

Castillo Only Extreme Review Update
4/09/19 Classic 168 and Updated Only Extreme 89
4/16/19 Classic 192 and Updated Only Extreme 3
4/23/19 Classic 216 Bypassed and Only Extreme 132 Demoted
4/30/19 Classic Review Ends, OnEx 261 Escapes Trials
5/07/19 Only Extreme 304 is AIC Level
5/14/19 Only Extreme 304 Scavenger Hunt

Lucky Panda Books
06/04/19 Lucky Panda Books Exremely Hard 48
06/11/19 Lucky Panda 96 and 144
06/18/19 Lucky Panda 192
06/25/19 Lucky Panda 240 Rides Nice Loop Coloring
07/02/19 Three Lucky Pandas
07/09/19 Lucky Panda 432 Displays a Reversed Boxline
07/16/19 Lucky Panda 480 Ends the Review

PencilPress 500+ Extreme
07/23/19 PencilPress Bottom Right 9 and Bean VI-24
07/30/19 PencilPress Bottom Right 17 and Moito III-4
08/06/19 PencilPress 25 and Master Class 30 Update
08/13/19 PencilPress 33 and Master Class 40
08/20/19 PencilPress 41 and A Well Hidden Dublex
08/27/19 PencilPress Extreme 49 and Master Class 60
09/03/19 PencilPress Extreme 57 and Two Master Classes
09/10/19 PencilPress 65 and Master Class 90
09/17/19 PencilPress 73 and Master Class 100
09/24/19 PencilPress 81 and Master Class 110

F__ These Sudoku Puzzles Are Hard
10/15/19 The FTSPAH Review Begins with a Tour
10/22/19 Systematic FTSPAH 44 and 84
10/29/19 FTSPAH 104 and 144
11/04/19 Two more Basic FTSPAH, 64 and 164
11/12/19 FTSPAH 124 and 184 Close the Review

Metcalf’s Patterns Game
11/19/19 Tracking a Patterns Game Entry
11/26/19 Metcalf’s Second Patterns Game Entry

Challenger’s Super Fiendish
12/03/19 Brian Challenger’s Super Fiendish 7
12/10/19 Super Fiendish 17 and 27
12/17/19 A Coloring Tidal Wave Drowns Sufi 37
12/24/19 Wayne Gould and Super Fiendish 45 and 57
12/31/19 Super Fiendish Bookends 67 and 77
1/07/20 Super Fiendish Ends With 87 and 97

J.B. Nakamoto Extreme
1/14/20 Reviewing a Truly Extreme Collection
1/21/20 Nakamoto Extreme 3 Exits in Full Color
1/28/20 Cluster Maintenance Pays in Nakamoto Extreme 23
2/04/20 Sudokuwiki Reaches Its Digit Forcing Chain
2/11/20 Nakamoto Extreme 43 Redefines Sysudoku Extreme
2/18/20 Mixed Solutions on Nakamoto Extreme 63
2/25/20 Sudokuwiki Ends Nakex 63 On Its Own
3/03/20 A Nakex 83 BARN Challenge
3/10/20 A Nakex 83 BARN Storming Finish
3/17/20 Sudokuwiki’s Nakamoto Extreme 103
3/24/20 A Pattern Analysis Attack on Nakex 103
3/31/20 Two SASdC Break Nakamoto Extreme 123
4/07/20 Nakamoto 143 Avoids Extremes
4/14/20 An Orphan Takes Down Nakamoto Extreme 163
4/21/20 Nakex 183 Hides the Keys
4/28/20 Wrapping Up Nakamoto Extreme With 183

Puzzleproof Extreme

  5/05/20  Puzzleproof’s Extreme 2 is Box Marking Level

  5/12/20  Can Box Marking be Extreme?

  5/17/20  Double Sweep Lessons From 112 and 133

  5/26/20  Puzzleproof’s Sudoku Extreme is Good Basic

  Stefan Heine’s Ultrahardcore Right Pages

  6/09/20  Ultrahardcore 3 Lifts Off

  6/16/20  Cell and Unit Forcing Begins Ultrahardcore 3

  6/23/20  Ultrahardcore 3 Schlagt Forcing Chains

  6/30/20  Ultrahardcore 3 Falls to Coloring Trials

  7/07/20  Readers Solve Ultrahardcore 3

  7/14/20  Beeby on Heine’s Ultrahardcore 3

  7/21/20  Ultrahardcore 47 Single Alternate SdC Trials

  7/28/20  Ultrahardcore 47 Pattern Trial

  8/04/20  Ultrahardcore 91 Trials Unleash Beeby

  8/11/20  Beeby Carries the Post Trial Aginst Ultrahardcore 91

  8/18/20  Beeby Finishes Ultrahardcore 91

  8/25/20  Sudokuwiki Finishes Ultrahardcore 91

  9/01/20  Beeby Hauls Ultrahardcore 135 Into Court

  9/08/20  A Pattern Trial Defeats Ultrahardcore 135

  9/15/20  Preparing a Pattern Trial on UHC 179

  9/22/20  A Partial Pattern Trial on Ultrahardcore 179

  9/29/20  Two Clues and Pattern Coloring Beat 179

10/06/20  Single Alternate Sue Unlocks Ultrahardcore 223

10/13/20  Beeby Carries UHC 223 to a Second Cluster

10/20/20  A Coloring Merge Overwhelms Heine’s Ultrahardcore 223

10/27/20  Ultrahardcore 267 Downed by an SASdC Surprise

11/03/20  A Long Path Begins in Ultrahardcore 311

11/10/20  All Hands on Deck Against UHC 311

11/17/20  A Coloring Trial Weakens Ultrahardcore 311

11/24/20  UHC 311 Provokes a SASdC Trial

12/01/20  An SASdC Trial Defeats Ultrahardcore 355

12/08/20  Lite Coloring Informs  UHC 399 Trial

12/15/20  Beeby Softens Up Ultrahardcore 443

12/22/20  SASc\dC Unlocks UHC 443 For Beeby

12/29/20  Pattern Trials Peel the UHC 487 Onion

Stefan Heine’s Ultrahardcore Left Pages

  8/10/21  Heine’s ultrahardcore 1 Starts the Review of Left Pages

  8/17/21  Single Alternate SdC on ultrahardcore 1

  8/24/21  Pattern Analysis with Coloring on UHC 1

  8/31/21  A UHC 45 Discontinuous Nice Loop Seminar

  9/07/21  UHC 89 Breaks Out from a Monster Basic

  9/14/21  A Box ALS in Left Page UHC 89

  9/21/21  Wrapping Up UHC 89

  9/28/21  Ultra 133 “Simple” Chains and Discontinuous Loops

10/05/21  Closing Out ultrahardcore 133

10/12/21 UHC Introduces a Beeby Option

10/19/21 UHC Stretches It Out

10/26/21 UHC 221 Vies for Right Page ultrahardcore Status

11/02/21 An ultrahardcore 221 ALS AIC Clinic

11/09/21 Two Solvers Play With UHC 265

11/16/21 The UHC 265 Wrap Up

11/23/21 UHC 309 Rounds the Bases

11/30/21 Softening Left Page ultrahardcore 353

12/07/21 A BARN Storming UHC 353 Finish

12/14/21 An AIC Parade by ultrahardcore 397

12/21/21 UHC 397 Fills the Stocking

Shye’s Fireworks Thread

12/28/21 X-Panel Elbows for Fireworks

  1/04/22 Fireworks 3 Matches Elbows and BV

  1/11/22 Fireworks 4 Stretches the Matched Elbow Rule

  1/18/22 Sharing Hanabi’s Secrets

  1/25/22 Hanabi Without Fireworks

  2/01/22 The Elbow n-set of shye’s Roman Candle

  2/08/22 The UHC Solvers on the shye Fireworks

  2/15/22 Beeby’s Elbow Quad in shye’s Catherine Wheel

  Post Ultrahardcore Sysudoku

  1/05/21  Lite Coloring in a Red Russel Special

  1/12/21  An Error Hides a Lite Coloring Trap on Ultrahardcore 399

  1/19/21  A Lite Coloring Update of Castillo’s Only Extreme 261

  1/26/21 A Lite Update on Castillo’s Only Extreme 347

  2/02/21 Lite Coloring Avoids Trials in KrazyDad 425

  2/09/21  Dov Introduces Lite Coloring of Ultrahardcore 311

  2/16/21  Recycle AIC Building on UHC 311

  2/23/21  Coloring ALS Value Groups in UHC 311

  3/02/21  AIC Building Trial Follow Up for UHC 311

  3/09/21  Building ALS Maps With Suset Tables

  3/16/21  Scanning the Column ALS and Some ALS Coloring

  3/23/21  Continuing the Box ALS Scans for UHC 311

  3/30/21  An ALS_XZ Wrap Up of UHC 311

  4/06/21  Building The ALS-wings of UHC 3

  4/13/21  Ultrahardcore Review ALS-wings II

  4/20/21  Ultrahardcore Review ALS-wings III

  4/27/21  Ultrahardcore Review ALS-wings IV

  5/04/21  Ultrahardcore Review ALS-wings V

  5/11/21  The Complex 1-Way in AIC Building

  5/18/21 Complex 1-Ways Take Out KDI 475