Uploaded August 2026 | Updated September 2026, 2 weeks ago
*** TODAY'S PUZZLE ***
Continuing to catch up with puzzles recommended during his holidays last month, Simon tackles Summetry by Kaktuslav this evening. Some of you have suggested this is a candidate for Puzzle Of The Year - and it totally is.
Play the puzzle at the links below:
https://sudokupad.app/o4u3kz1764
Rules:
Normal sudoku rules apply. Shade some cells in the grid so that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2×2 region is entirely shaded or entirely unshaded. The shading must also be centrally symmetric: cells mapped to each other by a 180∘ rotation about the center of the grid have the same shading. Digits may not repeat within a cage. Each cage contains at least one shaded and one unshaded cell, and the sum of its unshaded digits equals the product of its shaded digits (a sum or product consisting of a single digit is simply that digit).
▶ BRAND NEW COMPETITION ON PATREON ◀
Our new competition launched today on Patreon! Solve the nine sudokus to be in with a chance to win! Closing date 20 August. Good luck!
patreon.com/crackingthecryptic
▶ Monday's Stream & BLUE PRINCE: THE FINALE? ◀
You can watch of stream of The Artisan Of Glimmith from Monday at this link (10pm UK time):
youtube.com/live/0rBQjvHPpCE
You can watch our last Blue Prince stream here:
youtube.com/live/vzXeRdtV9sQ
▶ ZETAMATH'S WORM: OUR BRAND NEW APP ◀
We've released a brand new collection of sudoku puzzles by Blobz. The worm features 12 connected sudokus and is a great way to enjoy more creations from this popular constructor:
Steam:
store.steampowered.com/app/4756830/Cracking_the_Cryptic__The_Sudoku_Worm_of_Zetamath
AppStore
apps.apple.com/us/app/cracking-the-cryptic/id1629992934
Android:
play.google.com/store/apps/details?id=com.StudioGoya.CrackingTheCryptic
All our apps can be found at our website with links to all outlets:
crackingthecryptic.com/apps
▶ NEW MERCHANDISE INCLUDING RAT RUN GOODIES ◀
cracking-the-cryptric-shop.fourthwall.com/en-gbp/collections/rat-run
▶ SIMON & MARK ATTEMPT BLUE PRINCE: THE SUDOKU ◀
This new epic (and epically long) video is now on Patreon (as well as our monthly sudoku hunt competition by Sandra & Nala). Check it all out here:
patreon.com/crackingthecryptic
▶ SVEN’S SUDOKU PAD ◀
Input classic sudoku puzzles into our software. With 12 free puzzles:
iOS: apps.apple.com/us/app/svens-sudokupad/id1570622073
Steam: store.steampowered.com/app/1706870/Svens_SudokuPad
Android: play.google.com/store/apps/details?id=com.svencodes.sudokupad
Amazon: Search for “SudokuPad”
▶ CTC FAN DISCORD SERVER◀
discord.gg/BbN89j5
▶ OUR VIDEO CATALOGUE – CATEGORISED WITH LINKS◀
tinyurl.com/CTCCatalogue
▶SEND US PUZZLES TO SOLVE/CONTACT US◀
crackingthecryptic@gmail.com
Snailmail: Mark Goodliffe, Box 102, 56 Gloucester Road, London SW7 4UB
▶FOLLOW US◀
Twitter: #crypticcracking
@crypticcracking
Instagram @crackingthecryptic
▶Credits◀
Music: Lucy Audrin (Piano): Mozart's Sonata no 16; and Mark’s outro music by Riffclown.
SOFTWARE: Thanks to Sam Cappleman-Lynes and Sven Neumann
Logo: Melvyn Mainini
Opening Credits: Burak Mescioğlu
▶ Contents Of This Video ◀
0:00 Intro music and puzzle introduction
2:07 London
2:46 Patreon competition
3:22 Streaming
3:46 Happy Birthdays
5:32 Rules
9:26 Start of Solve: Let's Get Cracking
#sudoku #puzzle #logic
*** TODAY'S PUZZLE ***
Continuing to catch up with puzzles recommended during his holidays last month, Simon tackles Summetry by Kaktuslav this evening. Some of you have suggested this is a candidate for Puzzle Of The Year - and it totally is.
Play the puzzle at the links below:
https://sudokupad.app/o4u3kz1764
Rules:
Normal sudoku rules apply. Shade some cells in the grid so that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2×2 region is entirely shaded or entirely unshaded. The shading must also be centrally symmetric: cells mapped to each other by a 180∘ rotation about the center of the grid have the same shading. Digits may not repeat within a cage. Each cage contains at least one shaded and one unshaded cell, and the sum of its unshaded digits equals the product of its shaded digits (a sum or product consisting of a single digit is simply that digit).
▶ BRAND NEW COMPETITION ON PATREON ◀
Our new competition launched today on Patreon! Solve the nine sudokus to be in with a chance to win! Closing date 20 August. Good luck!
patreon.com/crackingthecryptic
▶ Monday's Stream & BLUE PRINCE: THE FINALE? ◀
You can watch of stream of The Artisan Of Glimmith from Monday at this link (10pm UK time):
youtube.com/live/0rBQjvHPpCE
You can watch our last Blue Prince stream here:
youtube.com/live/vzXeRdtV9sQ
▶ ZETAMATH'S WORM: OUR BRAND NEW APP ◀
We've released a brand new collection of sudoku puzzles by Blobz. The worm features 12 connected sudokus and is a great way to enjoy more creations from this popular constructor:
Steam:
store.steampowered.com/app/4756830/Cracking_the_Cryptic__The_Sudoku_Worm_of_Zetamath
AppStore
apps.apple.com/us/app/cracking-the-cryptic/id1629992934
Android:
play.google.com/store/apps/details?id=com.StudioGoya.CrackingTheCryptic
All our apps can be found at our website with links to all outlets:
crackingthecryptic.com/apps
▶ NEW MERCHANDISE INCLUDING RAT RUN GOODIES ◀
cracking-the-cryptric-shop.fourthwall.com/en-gbp/collections/rat-run
▶ SIMON & MARK ATTEMPT BLUE PRINCE: THE SUDOKU ◀
This new epic (and epically long) video is now on Patreon (as well as our monthly sudoku hunt competition by Sandra & Nala). Check it all out here:
patreon.com/crackingthecryptic
▶ SVEN’S SUDOKU PAD ◀
Input classic sudoku puzzles into our software. With 12 free puzzles:
iOS: apps.apple.com/us/app/svens-sudokupad/id1570622073
Steam: store.steampowered.com/app/1706870/Svens_SudokuPad
Android: play.google.com/store/apps/details?id=com.svencodes.sudokupad
Amazon: Search for “SudokuPad”
▶ CTC FAN DISCORD SERVER◀
discord.gg/BbN89j5
▶ OUR VIDEO CATALOGUE – CATEGORISED WITH LINKS◀
tinyurl.com/CTCCatalogue
▶SEND US PUZZLES TO SOLVE/CONTACT US◀
crackingthecryptic@gmail.com
Snailmail: Mark Goodliffe, Box 102, 56 Gloucester Road, London SW7 4UB
▶FOLLOW US◀
Twitter: #crypticcracking
@crypticcracking
Instagram @crackingthecryptic
▶Credits◀
Music: Lucy Audrin (Piano): Mozart's Sonata no 16; and Mark’s outro music by Riffclown.
SOFTWARE: Thanks to Sam Cappleman-Lynes and Sven Neumann
Logo: Melvyn Mainini
Opening Credits: Burak Mescioğlu
▶ Contents Of This Video ◀
0:00 Intro music and puzzle introduction
2:07 London
2:46 Patreon competition
3:22 Streaming
3:46 Happy Birthdays
5:32 Rules
9:26 Start of Solve: Let's Get Cracking
#sudoku #puzzle #logic
