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Eoin Jackson I don't get how the matches are generated.

How come I have 4 of these, even though I put it 2nd and not first (I have only one match in the variant I put first). And how come I have zero match ups in some variants (e.g. Aegilops / Speed) even though I picked all 25?

Dave Kempshall It's a mix of your priority order + your oppenents.

Eoin Jackson I know, but how is it some of my lower down preferences generated no games at all?

Elizabeth Beer You are likely to have a few games in variants you put towards the top of the list, and more than might be expected from your own list in very popular variants. If someone lists an extremely unpopular (!) variant at or near the top of their list, it will not guarantee lots of match ups (as others may have put that variant at or near the bottom of their list…). To work it out you could assign numbers to the ordered lists, and then add up each variant’s score between each pair of players. For example, if you have OR as 2 but someone else has it 20th, that is a combined total of 22, but you might have Normal as 3 and the other person has it as 5th, that combined total is 8. Do that for all variants and the one with the lowest combined score “wins” (although with the two lists side by side it will not be necessary to calculate all of those totals)