| Puzzle invented by a Japanese math teacher |
Universal |
10 Mar 2022 |
| Logic puzzle invented by a math teacher as a teaching tool |
New York Times |
14 Dec 2021 |
| Puzzle whose name comes from the Japanese for “cleverness squared” |
New York Times |
14 Oct 2021 |
| Perhaps Bruce doubles as 6's relative |
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| Numbers game |
New York Times |
29 Aug 2018 |
| Numbers game |
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| Math puzzle |
New York Times |
01 Sep 2017 |
| Popular puzzle invented in Japan |
New York Times |
22 Mar 2017 |
| Math puzzle |
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| Popular puzzle invented in Japan |
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| Newspaper puzzle suggested by this crossword's shaded squares |
New York Times |
03 Nov 2015 |
| Newspaper puzzle suggested by this crossword's shaded squares |
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| Numbers game |
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| Diversion also called MathDoku |
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| Sudoku companion |
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| Puzzle whose name means "cleverness squared" |
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