Talk:Endgame tablebase
Add topic | Endgame tablebase was one of the Sports and recreation good articles, but it has been removed from the list. There are suggestions below for improving the article to meet the good article criteria. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake. | |||||||||||||||||||||||||||
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Contradiction: "generated by retrograde analysis" vs "Step 1: Generating all possible positions"
[edit]There is a contradiction between that statement from the introduction,
- "Tablebases are generated by retrograde analysis, working backward from a checkmated position."
and "Step 1: Generating all possible positions" which considers positions that are obviously not checkmated positions (which require the enemy K to be on the border). So I wonder which one is right. I do think that retrograde analysis should be the way to go. Then, for many standard "mates" [K+Q, K+R, ...], one can restrict the search to the case where the opponent king is on the border -- i.e., only 4, not 10 squares, and clearly much less positions of the mating material: one of the pieces must threaten the king; and if it is next to it, it must be protected by the own king or another piece. — MFH:Talk 21:56, 3 February 2022 (UTC)
- While I agree that the searching principle(s) may be somewhat unclear in the article, I do not immediately agree that the ending positions can really be restricted to checkmated positions. A complete retrograde search would need to include stalemate positions, but also... any position that can be a repetition of an earlier position.Elias (talk) 14:43, 15 February 2023 (UTC)
ÑÑ The most basic utility of endgame tablebases doesn't seem to be treated anywhere. If some piece is a statistical traitor, wouldn't that be something that human players should try to figure out? - Joshua Clement Broyles ÑÑ — Preceding unsigned comment added by 186.28.50.13 (talk) 17:24, 25 May 2022 (UTC)
Metrics are outdated
[edit]DTZ metric is more popular than DTC and DTM and should be mentioned in bold. Can anyone think of a simple position in which the difference between all 3 metrics is highlighted? Jack234567 (talk) 07:05, 31 October 2023 (UTC)
- I've added some information about DTZ but we still need a better diagram. Jack234567 (talk) 04:08, 1 November 2023 (UTC)
GA Reassessment
[edit]The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
- Article (edit | visual edit | history) · Article talk (edit | history) · Watch • • Most recent review
- Result: Delisted. ~~ AirshipJungleman29 (talk) 13:11, 8 January 2024 (UTC)
This 2007 listing contains significant unctied material, failing GA criterion 2b); it may also need to be updated, as a message on the talk page calls attention to "outdated metrics". ~~ AirshipJungleman29 (talk) 17:30, 25 December 2023 (UTC)
- I made a bunch of edits few months ago which I believe largely solves the outdated problem. I think most of uncited material could just be removed, as it's pretty unnecessary. Jack234567 (talk) 21:42, 25 December 2023 (UTC)
- I'll go through this paragraph by paragraph and see what's trivial to do. Remsense留 01:14, 26 December 2023 (UTC)
- Yeah, I would say there's also a lot of WP:FANCRUFT for a non-general audience that makes it difficult to know how to begin reorganizing the article. Remsense留 01:20, 28 December 2023 (UTC)
- Delist: there is still a lot of uncited material. Phlsph7 (talk) 09:02, 7 January 2024 (UTC)
Partial 8-piece tablebase
[edit]Article maybe to be updated in light of https://lichess.org/@/Lichess/blog/op1-partial-8-piece-tablebase-available/1ptPBDpC. 1234qwer1234qwer4 00:00, 11 February 2026 (UTC)
Page now takes a lot of time to load
[edit]After I've added all cases for 3-6 man endings the page now contains a lot of images in the tables section. Probably we will have to split to smaller pages. Or is there maybe any trick to load the images only when the table is expanded? Robal1991 (talk) 09:43, 13 March 2026 (UTC)
- Maybe the sections could be subdivided according to the number of pawns. Bubba73 You talkin' to me? 13:58, 13 March 2026 (UTC)