Logic Masters Deutschland e.V.

Big Brother Mountain

(Published on 15. September 2026, 20:29 by Vythic)

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Normal sudoku rules apply.

Cageless Yin Yang: Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 cluster of cells is entirely shaded or unshaded. Cells in a cage do not count as shaded or unshaded.

Secret Summit: Digits orthogonally along shaded cells must be ascending or descending, with 1 and 9 reversing the direction. Digits along unshaded cells must do the same. All possible orthogonally connected sequences of shaded/unshaded cells must obey this rule.

Thermometers: Cells on a thermometer are either all shaded or all unshaded. Digits along a thermometer increase from the bulb.

Killer Cages: Digits in a cage sum to the number in the top-left of the cage.

Solution code: Column 6, from top to bottom, with a "+" between digits that differ in being shaded/unshaded.

Last changed on on 21. September 2026, 16:52

Solved by junho75689, elmers, QuiltyAsCharged, lmdemasi, Malakree, Gunkan, WvdWest
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Comments

on 22. September 2026, 04:43 by Gunkan
Great puzzle that seemed impossible at first, then a really nice flow

on 19. September 2026, 23:57 by QuiltyAsCharged
Whew! That's a tough cookie

Difficulty:4
Rating:N/A
Solved:7 times
Observed:1 times
ID:000UXA

Variant combination Shading puzzle

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Solution code:

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