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 4-Fill Party Winds Up the Weeklies
Tom Sheldon’s Master Class
2/05/13 Grading the Master Class
2/19/13 Snapshots from Sheldon’s Master Class
8/06/19 PencilPress 25 and Master Class 30 Update
8/13/19 PencilPress 33 and Master Class 40
8/20/19 PencilPress 41 and A Well Hidden Dublex
8/27/19 PencilPress Extreme 49 and Master Class 60
9/03/19 PencilPress Extreme 57 and Two Master Classes
9/10/19 PencilPress 65 and Master Class 90
9/17/19 PencilPress 73 and Master Class 100
9/24/19 PencilPress 81 and Master Class 110
10/01/19 Master Class 120 Completes the 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/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
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
Systematic Sudoku 