Logic Masters Deutschland e.V.

Cracked Ice

(Published on 14. September 2025, 04:39 by NotSoMagnifique)

This was my entry for Scojo's impostor sudoku challenge, and I was assigned to imitate Chris Napolitano. Those who know his work will see exactly which puzzle I ended up using for inspiration.

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Rules:

- Standard sudoku rules apply.

- Lockout - digits along a lockout line must not be between the two end digits in the diamonds, which must differ from each other by at least 4.

- Kropki - Black Kropki dots separate digits in a 2:1 ratio. No negative constraint.

- XV pairs- Xs separate digits that sum to 10, Vs separate digits that sum to 5. No negative constraint.

- Palindromes - the string of digits on a light gray palindrome line must read the same backwards and forwards.

Region Sum Lines - Light blue lines are Region Sum lines where the border of a 3 by 3 box splits the line into parts with equal digit sums.

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Sudokupad

Solution code: Column 8 digits, top to bottom

Last changed on on 5. March 2026, 03:52

Solved by jalebc, Karitsu, SAV2000, LehanLehan, plinke, flaemmchen, NineK, jordanza, macintux, chrisjnap, Zibl, SKORP17, Photyne, meiwanmeiliao, Kichelle, ringel, NicoD, Rollo, themadridi, drf93, hirassy, ... iamlequebecois, stinger10x, Lenivaya_Joppa, aneilmac, Dystopixx, Janie, Mylo_Vertical, Kekes, aldango, dalthor1974, sudoapt, alisa2002, Hons, ThatSuper, MellowMars, renewedrebirth, ManniMensen
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Comments

on 4. March 2026, 02:29 by jessica6
please add sudoku tag...

on 9. January 2026, 13:50 by CHalb
Please add the Sudoku tag.

on 28. November 2025, 11:03 by CHalb
Please add the Sudoku tag.

on 14. September 2025, 17:40 by Zibl
Lovely puzzle!

on 14. September 2025, 17:18 by chrisjnap
Beeaauutiful color palette, Katie!!!

on 14. September 2025, 15:06 by macintux
I play puzzles with lockout lines once every year or so; I had a hard time remembering whether the digits along the line must be, or must not be, between the ends. So that slowed me down quite a bit.

Very nice puzzle, thanks.

Difficulty:1
Rating:91 %
Solved:147 times
Observed:4 times
ID:000P6E

Standard puzzle English knowledge

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Solution code:

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