this post was submitted on 21 May 2025
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[–] moakley@lemmy.world 34 points 1 day ago (4 children)

Every time Rock Paper Scissors comes up, I like to point out the superiority of Odds and Evens for resolving disputes.

Rules:

One player picks Odds, the other player picks Evens.

Someone says, "Odds, Evens, says, SHOOT", and both players put out either one finger or two fingers.

Count the fingers. If it's odd, Odds wins. If it's even, Evens wins.

Exactly 50% chance, no ties. RPS has always been obsolete.

[–] Skua@kbin.earth 20 points 1 day ago (1 children)

Isn't RPS "meant" to be a game rather than a way to decide randomly between two options? There's an element of skill involved since you can attempt to avoid playing patterns and identify patterns in your opponent's play in repeated rounds

[–] LanguageIsCool@lemmy.world 2 points 15 hours ago (1 children)

In game theory, odds and evens is called matching pennies, and RPS is the 3-strategy generalization of matching pennies.

Both are games with cyclic behavior and no pure Nash equilibria.

[–] Skua@kbin.earth 2 points 13 hours ago

Fair enough! That's not a field I've got any knowledge of

[–] driving_crooner@lemmy.eco.br 7 points 1 day ago

Is better unbalanced RPS. Play for 5 points, a win with Rocks counts as 2 points.

[–] IncogCyberspaceUser@lemmy.world 2 points 19 hours ago* (last edited 19 hours ago) (1 children)

That's really cool, thanks for sharing.
I'm a bit confused by "odds, evens, says, shoot".
Do both players agree who bets on evens and who on odds, and then they say "SHOOT" and show their fingers?

[–] moakley@lemmy.world 3 points 17 hours ago (1 children)

That's just instead of saying, "Rock, Paper, Scissors, SHOOT!". "Shoot" is when both players put out their hands, just like RPS.

And yes, the players have to agree on which one of them is Odds and which one is Evens beforehand.

When I used to play a game where we had to randomize who went first, my best friend and I decided in advance that I'd always be Evens and he'd always be Odds.

There's no difference, but if you absolutely can't agree on who's what you could always flip a coin for it.

[–] IncogCyberspaceUser@lemmy.world 1 points 17 hours ago (1 children)

Ah I see, thanks for explaining! I feel a bit dense right now, but what is "says" supposed to mean? Or am I thinking about it too much and it's just a fill word to have a four word chant.

[–] moakley@lemmy.world 3 points 16 hours ago

You're thinking about it the right amount. It's a fill word.

I learned the game as a kid and it was one of those things everyone just knows to say, like "olly olly oxen free" or "eeny meeny miny mo." It's just what you say.