Question: Gokigen Naname is a binary-determination logic puzzle published by what Japanese publisher that was established in 1980, and became prominent worldwide with the popularity of Sudoku?
Sentence (from "Kakuro"): In 1966, Canadian Jacob E. Funk, an employee of Dell Magazines, came up with the original English name "Cross Sums" and other names such as "Cross Addition" have also been used, but the Japanese name "Kakuro," abbreviation of Japanese "kasan kurosu" (加算クロス, addition cross), seems to have gained general acceptance and the puzzles appear to be titled this way now in most publications.
Relevant evidence: No