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Knight's tour

解謎

/1月 1, 1970
/Whole Group

The earliest known references to the Knight's Tour problem date back to the 9th century. The Knight's Tour is a mathematical problem involving...

English 16

解謎

/1月 1, 1970
/Whole Group

English 16 a very nice puzzle invented in 1900 by the American Sam Loyd, also described as the greatest inventor of puzzles by Martin Gardner.The goal...

English Alphabet

教育

/1月 1, 1970
/Whole Group

Программа предназначена для изучения, запоминания и тренировки произношения букв английского алфавита.免費玩English Alphabet APP玩免費免費玩English Alphabet Ap...