Wikipedia:Articles for deletion/Three cups problem

The following discussion is an archived debate of the proposed deletion of the article below. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.

The result was keep. (non-admin closure) Szzuk (talk) 16:30, 1 November 2018 (UTC)[reply]

Three cups problem

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No assertion of notability. Elementary school-level exercise in the concept of invariants that does not warrant its own article. Nowak Kowalski (talk) 15:17, 25 October 2018 (UTC)[reply]

Note: This discussion has been included in the list of Mathematics-related deletion discussions. XOR'easter (talk) 16:04, 25 October 2018 (UTC)[reply]

Note: This discussion has been included in the list of Games-related deletion discussions. XOR'easter (talk) 16:04, 25 October 2018 (UTC)[reply]

Keep per WP:PRESERVE. Widely known, so Wikipedia should have coverage and an explanation. SpinningSpark 17:21, 25 October 2018 (UTC)[reply]
Keep, obviously, and per User:Spinningspark. --Doncram (talk) 19:31, 25 October 2018 (UTC)[reply]
Comment I might be inclined to keep, if the article had any references. But as it currently stands it has no sources. A quite internet search did not come up with much I found this educational video. [1] We need sources to back up the claim its widely known. --Salix alba (talk): 22:17, 25 October 2018 (UTC)[reply]
- @Salix alba: Book sources: [2][3][4][5]. SpinningSpark 22:43, 25 October 2018 (UTC)[reply]
Keep The referencing needs to be improved, but that's an article-improvement issue, not an article-deletion one. I could see a case for this article being merged into another one, but that's a discussion for a different forum. XOR'easter (talk) 15:59, 26 October 2018 (UTC)[reply]
Keep the article is really bad, but there's enough usage of it to justify something and I don't see a merge target; Invariant (mathematics) is not a reasonable merge target and there's no list of pedagogical puzzles. power~enwiki (π, ν) 02:06, 29 October 2018 (UTC)[reply]

The above discussion is preserved as an archive of the debate. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.