Vector Sumo key art
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Vector Sumo

Two to four wrestlers, one 7×7 rim — every shove is committed in secret before anybody moves.

2-4 players · free or for a WCHI stake · phone-ready

About the game

A pure-skill arena brawl for two to four wrestlers on a fixed 7×7 platform with four pillars set in rotational symmetry — no dice, no seeds, nothing hidden about the board itself. Each round you choose exactly one thing: step one cell, shove the whole adjacent line of wrestlers one cell, or brace and cancel one shove coming at your line that round. Nobody may walk off the edge; the only way out is a shove, and only the last wrestler in a shoved line goes over the rim. Shoves resolve in seat order, then every move resolves at once — contested cells fail for everyone who wanted them, head-on swaps fail, and a ring of three or more wrestlers rotates cleanly. A bout ends when one wrestler is left standing or after ten rounds, and a bout that runs out of rounds goes to whoever stands closest to the centre. First to two bouts takes the match.

How it works on XAYA

Provably fair, by construction

Matches run inside a XAYA game channel, and every round is a cryptographic commit/reveal in two halves: each seat signs a SHA-256 commitment to its action first and opens it only once every commitment is locked, so nobody can answer a choice they were not meant to see yet. The deterministic rules blob that referees the match checks each reveal against the commitment it was promised by — a late revealer can read what the others already opened but cannot change what it has already signed. The rules carry no randomness at all, so a finished match replays bit-for-bit from the signed move log, and the channel's timeout and dispute path settles a match somebody walks out of.

Game channels & GSPs, explained
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