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


Solved by jalebc, Karitsu, SAV2000, LehanLehan, plinke, flaemmchen, NineK, jordanza, macintux, chrisjnap, Zibl, SKORP17, Photyne, meiwanmeiliao, Kichelle, ringel, NicoD, Rollo, themadridi, drf93, hirassy, ... mightcould, Thomster, Orioooo, iWoodyy, jde1025, LambdaAthena, Raistlen, ammiraglio, taiyaki, CSStead, frizz, Mr.CHEN, puzzlesky, sortofrican90, garycblack, moss, radium, NickMusicNerd, jklimp, alm
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Comments

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:92 %
Solved:119 times
Observed:1 times
ID:000P6E

Standard puzzle English knowledge

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Solution code:

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