Logic Masters Deutschland e.V.

Anti-Quads 4

(Published on 6. January 2025, 21:01 by The Bard)

Anti-Quads 3

Normal Sudoku rules apply, place the digits 1-9 in each row, column, and box.

Anti-Quadruples: Digits in the PINK circle cannot appear in one of the four surrounding cells.

Anti-Knight: Cells that are a Knight's move apart (in chess) may not contain the same digit.

Solve on CTC

This is a sequel to the puzzle Anti-Quads,

Anti-Quads 2,

And Anti-Quads 3.

If you like this puzzle you may enjoy some of my other puzzles too, click HERE to see the other puzzles I have made.

Solution code: Row 6


Solved by keenbowl, fuxia, seeppp, MartinR, sgerstenberger, SincereEngineer, loigor4, Ploctypus, Superficelle, SKORP17, Cliff, kkli, Vulajin, gxorgx, MontanaPearl, Greg, cmigas, atomvic, M8tyw31, ashwin, ... THef of Time, Thut46, zhangjinyang, AnebodaSlatorp, Dharmabum, Coufik, TeakH064, ThreeGunGary, Zuka, MaxSmartable, ClarityC, Omnicole, jkl, Selsted, k2u5as, bcreturnee, AN_not_IO, susadoraku
Full list

Comments

on 9. January 2025, 10:05 by a2k
First time trying the Anti-Quad. Really enjoyed it!

P.s. I believe that the anti-Quad 3 clue in box 8/9 is not necessary as 3 is ruled out of those cells by a combination of anti-quad/king in other boxes once you place 3 in box 1 and 2.

on 8. January 2025, 15:45 by moHa
Great puzzle, first time I tried the Anti-Quad ruleset. Took me about 40 minutes. For me the break in wasn‘t too hard to spot but after that I had quite a challenge. Thank you for setting!

on 8. January 2025, 11:30 by moHa
Great puzzle, first time I tried the Anti-Quad ruleset. Took me about 40 minutes. For me the break in wasn‘t too hard to spot but after that I had quite a challenge. Thank you for setting!

Last changed on 8. January 2025, 00:21

on 8. January 2025, 00:14 by Finn Mayhew
Held the challenge throughout, enjoyed immensely! Solve video as per request (unfortunately, it will disappear after a few weeks I believe): https://www.twitch.tv/videos/2347102097

~~
Glad you enjoyed it. People can enjoy the solve in the meantime until it is deleted. I was truly amazed that the first time checking out Twitch I found you in the middle of this solve! Good timing.

The Bard

on 7. January 2025, 19:03 by Spider
Flow starts with some very clever uses of the combination of restraints. Spoiler—For a moment I felt like I was in a strip club with all the naked singles abound. Which are one of my least favorite deductions, yet I somehow was having a ton of fun! Then about halfway through this becomes a classic of the challenging and engaging anti-knight genre. Well done and thanks for setting

on 7. January 2025, 18:23 by Rockon101000
Challenging and engaging. Took just over an hour, although I missed some obvious digits in some instances.

on 7. January 2025, 16:35 by wentel21
Very nice puzzle<3 i loved all the deductions that you must to see in order to solve it<3

on 7. January 2025, 15:47 by PinkNickels
Another banger of a puzzle, Bard. Very fun. Took 14:48 today. Hope you're doing well. Happy New Year.

on 7. January 2025, 04:10 by OGRussHood
Toughest one of the anti-quad series, but super enjoyable.

Difficulty:2
Rating:93 %
Solved:201 times
Observed:3 times
ID:000LFN

Variant combination

Enter solution

Solution code:

Login