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Tagged with solvability logic-grid
3 questions
4
votes
2
answers
501
views
Beach Umbrellas puzzle: did I make a mistake or is Brainzilla wrong?
https://www.brainzilla.com/logic/logic-grid/beach-umbrellas/ has the following puzzle:
Four families are going to the beach in the morning and are bringing
their family-size umbrellas. Which family ...
3
votes
2
answers
930
views
Unsolvable sudoku net with maximum blocks
Definitions
For a $9\times9$ grid $G$ (not necessarily respecting sudoku rules), a subset of cells $S$ is defined to be sudoku-friendly if the values in $S$ do not contradict the rules of sudoku.
...
- 1,004
16
votes
4
answers
18k
views
Fast strategies for solving Einstein's puzzles?
The Einstein's puzzle or zebra puzzle is a well-known logic puzzle. Are there any very easy ways to solve it fast?
- 661