Logic Masters Deutschland e.V.

The Minimum Compass

(Published on 17. February 2026, 11:05 by Rab3aron)

The Minimum Compass

Rules:

Standard Sudoku: Place the digits 1–9 so that each row, column, and 3×3 box contains each digit exactly once.

Diagonal Sudoku: The two main diagonals also contain digits 1–9 with no repeats.

Arrows: Digits along an arrow sum to the number shown in the circled cell.

Double Arrows: The sum of the digits along the red line is equal to the sum of the digits in the circles at either end of the line.

Minimum Cells: Each purple cell is smaller than all of its orthogonally adjacent neighbors.

Thermometers: Along each thermometer, digits strictly increase from the bulb to the tip.

Solve Online

Happy solving!

Solution code: Enter Row 4 from left to right.


Solved by L00ping007, StefanSch, plinke, chippers, PinkNickels, Xerix, gdc, Silentdodo, fuxia, Ragna, keesh, Fool on Hill, wuc, Bjd, Kenji769, Corey115, godgamer2, cornish-john, Chaka, Saltman, sacredgrass, ... SKORP17, pepe74287, Sonki, particularmess, jalebc, lianarox, Exigus, HopperSmith92, Tacocat, cegie, ebulku, jguer, Crul, olliwright, Julianl, jimblek, b413x, sigge, hungkenchanlee, Malakree
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Comments

on 19. February 2026, 08:04 by HopperSmith92
2* for me.Starting is easy and the whole logic is smooth

on 18. February 2026, 09:39 by Snookerfan
Very nice symmetrical puzzle! There was one stip midsolve that was quite tricky, overall very smooth. Thanks

on 18. February 2026, 09:25 by wuc
2* break in. One tougher step along. Beautiful construction thx.

on 17. February 2026, 22:20 by Chaka
Nice puzzle, 1,5* overaĺl difficulty for me with a slightly harder mid solve step. Thanks for sharing!

on 17. February 2026, 19:46 by wuc
2* break in. One tougher step along. Beautiful construction thx.

on 17. February 2026, 19:09 by keesh
Loved the symmetry of this puzzle. The solve path isn't to hard to find and flows very nicely.

on 17. February 2026, 17:45 by Ragna
Fun puzzle! Tank you. :-)

on 17. February 2026, 15:36 by VitP
the opening is easy enough ... you can get a handful of digits and candidates, but then you hit a brick wall.
definitely not level 2

Difficulty:3
Rating:92 %
Solved:51 times
Observed:3 times
ID:000RIC

Puzzle combination Puzzle variant Variant combination

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Solution code:

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