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| author | Ben Harris <bjh21@bjh21.me.uk> | 2023-02-11 19:35:32 +0000 |
|---|---|---|
| committer | Ben Harris <bjh21@bjh21.me.uk> | 2023-02-11 19:35:32 +0000 |
| commit | ec84b45ba4a48bd4b50c98fdeffa13f836842be7 (patch) | |
| tree | f25a09fcad47297f409ffb7859cacc708e29dc11 /cube.c | |
| parent | ad2fb760fc881d1ceb1ac1151bf60b85deb16c71 (diff) | |
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Mention how old the 15-puzzle is
For most puzzles, the manual tries to at least mention its origin.
Wikipedia suggests that the precise inventor of the 15-puzzle is a bit
uncertain, but US patent number 207124 definitely describes it in
1878, so "dates from the 1870s" seems pretty solid.
Diffstat (limited to 'cube.c')
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