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There are many ways to describe its <jats:italic>P<\/jats:italic>-positions (safe positions to move to). One way is to code them by the Fibonacci word 010010100100101..., which is the unique fixed point of the substitution of 0 by 01, and of 1 by 0. The coordinates of the <jats:italic>n<\/jats:italic>-th <jats:italic>P<\/jats:italic>-position are encoded by the location of the <jats:italic>n<\/jats:italic>-th zero and the <jats:italic>n<\/jats:italic>-th one in the Fibonacci word. We show that a minor modification of the rules of Wythoff Nim leads to a game with <jats:italic>P<\/jats:italic>-positions that are coded by 010010010010100100... This word can be derived by deleting all 2\u2019s from the Tribonacci word, which is the unique fixed point of the substitution of 0 by 01, of 1 by 02, and of 2 by 0.<\/jats:p>","DOI":"10.1007\/s00182-022-00824-1","type":"journal-article","created":{"date-parts":[[2022,11,22]],"date-time":"2022-11-22T23:04:40Z","timestamp":1669158280000},"page":"1099-1117","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Queen reflections: a modification of Wythoff Nim"],"prefix":"10.1007","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8347-4110","authenticated-orcid":false,"given":"Robbert","family":"Fokkink","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dan","family":"Rust","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,11,21]]},"reference":[{"key":"824_CR1","doi-asserted-by":"crossref","unstructured":"Baake M, Grimm U (2013) Aperiodic order, vol 1. 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