There are no detailed records of this contest being conducted, other than the text of the uta’awase itself, but it is clear from this that it was, indeed, an acrostics (mono no na) match, where poets spelled out the names of the topics in the course of their poems. It seems clear that it must have taken place after the compilation of Kokinshū, as none of its poems are included in that anthology, and, given that the contest was sponsored by Uda, it is unlikely to have been ignored, had its contents been available (Hagitani 1963, 120-21). Of the named participants, Tsurayuki has the most poems with eight, followed by Tadamine and Sadafun with three each, Tomonori with two, and then Okikaze and Fukayabu with one each.

In fact, there is some doubt about the authorship of one of Tomonori’s poems (18), as it is included in Ise-shū 伊勢集 and attributed to her. Given Ise’s close relationship with Uda, it seems likely that she was involved in the organisation of this contest.

You can read through all the contest’s poems, starting here.