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qwr's user avatar
qwr's user avatar
qwr
  • Member for 8 years, 10 months
  • Last seen this week
15 votes
2 answers
870 views

Chip Off the Old Block

11 votes
13 answers
2k views

As Stack Exchange does

2 votes
1 answer
474 views

Tile 1x2 dominoes in a 2x10 space

1 vote
1 answer
145 views

Regular polygons meeting at a point