Philippos's user avatar
Philippos's user avatar
Philippos's user avatar
Philippos
  • Member for 6 years, 4 months
  • Last seen this week
  • Black Forest, Germany
23 votes
10 answers
2k views

How many ways to cut a number into an equation?

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9 answers
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Limited letter renderer: BIOPD

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19 answers
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Just another traffic jam!

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8 answers
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One-dimensional map colouring

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Which skill to train?

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Play a game of memory

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Find the conflict-free sitting arrangement