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4th
19:22
Четыре хода
Entry tags:
загадки
,
шахматы
7th
13:11
Сенатор
Entry tags:
криптография
,
математика
10th
19:00
Вопрос с собеседования
- 5 comments
Entry tags:
математика
19th
18:00
Trucker's hitch
Entry tags:
узлы
28th
11:13
Площадь треугольника
- 11 comments
Entry tags:
математика
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