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Problems

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Difficulty
Sort by
5310
Eagles and Woodpeckers
Very hard
5334
Incinerate el
Medium
5345
PIN
Very hard
5401
Polygon and Ellipses
Very hard
5418
Let There Be Light
Very hard
5421
Cubic Colonies
Easy
5457
Football
Easy
5460
Matches
Very hard
5478
Convex hull
Hard
5498
Largest Volume
Hard
5499
Number of tangents
Easy
5500
Triangle and Point 2
Easy
5531
The Return of Superman
Hard
5544
Corridor
Easy
5548
Garden
Hard
5553
Lord Bradley on the North Pole
Medium
5611
Biggest Inscribed Ellipse
Easy
5613
Boss, I Can See You!
Hard
5614
Fire Signals
Hard
5656
Map Tiles
Very hard
5658
Pirate Chest
Very hard
5659
Pollution Solution
Very hard
5666
Little Mammoth
Medium
5673
Drawing Problem
Hard
5679
Snooker
Hard
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