• 1. The explorer who needed 10 days to climb a mountain was either the explorer who climbed Everest or the explorer who climbed in 1970.
  • 2. The 1970 climbing took longer than the 1990 climbing.
  • 3. Of the explorer Ludwig and the explorer Otto, one climbed in 1990 and the other climbed Kilimanjaro.
  • 4. Aconcagua needed 5 more days to be climbed than the mountain climbed in 1970.
  • 5. The mountain climbed in 1980 needed 5 more days to be climbed than the mountain climbed by Otto.
  • 6. Everest was either climbed by Edmund or climbed in 1980.
  • 7. The mountain climbed in 1990 needed 5 fewer days than the mountain climbed by Edmund.
  • 1. The explorer who needed 10 days to climb a mountain was either the explorer who climbed Everest or the explorer who climbed in 1970.
  • 2. The 1970 climbing took longer than the 1990 climbing.
  • 3. Of the explorer Ludwig and the explorer Otto, one climbed in 1990 and the other climbed Kilimanjaro.
  • 4. Aconcagua needed 5 more days to be climbed than the mountain climbed in 1970.
  • 5. The mountain climbed in 1980 needed 5 more days to be climbed than the mountain climbed by Otto.
  • 6. Everest was either climbed by Edmund or climbed in 1980.
  • 7. The mountain climbed in 1990 needed 5 fewer days than the mountain climbed by Edmund.

Observation: This table is automatically filled accordingly to the grid.

How to play

  • Start by reading all the clues;
  • Find the most basic clues and use the grid to mark them on it;
  • Use logic deduction to find propositions that are not explicit;
  • Click on a clue to mark it as used;
  • The answer table is filled automatically.

More Logic Grid Puzzles

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If, after reading the instructions, you still don't understand how to play, try playing one of these simpler logic grids puzzles. They are "very very easy".

Step by step guide

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Printable version

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