Phillip is an AI that has been trained to play Super Smash Bros. Melee using imitation learning and deep reinforcement learning. Recently, the bot has been gaining some attention in the community after some top players played exhibition matches against it. Notably, Moky played it in a first-to-10 set in the Fox ditto (10-3 in Phillip's favour) and Zain played it in a first-to-5 set (5-3 in Zain's favour).

Phillip has a long list of agents who are trained to play certain matchups. Some of these agents are much stronger than others. I am interested in tracking the progress of agents who I believe are approaching superhuman level. At the time of writing (2024-11-19), I believe that the strongest agent is fox_d18_ditto_v3 (released 2024-11-18). I will maintain a list of "Plausibly Superhuman Agents", beginning with fox_d18_ditto_v3 and updating the list as the developer releases new agents of similar or greater proficiency in their specialty matchups. As the developer releases stronger agents in a given matchup, they will replace their ancestors on the list of PSAs.

Plausibly Superhuman Agents

fox_d18_ditto_v3 (added 2024-11-19)

Unsportsmanlike Exploit Clause

If a player discovers an exploitable behaviour in a Plausibly Superhuman Agent which trivializes the matchup (e.g. a way of manipulating a Samus agent into getting hit by its own reflected missiles from respawn until death), then the intentional use of such an exploit will invalidate the result of the set.

Resolution Criteria

Resolves immediately to YES if, at any point during the 2025 calendar year, a human player defeats a Plausibly Superhuman Agent in a best-of-5 (or greater*) set in the agent's specialty matchup, without violating the Unsportsmanlike Exploit Clause. The set must be played with the Slippi Ranked ruleset (no wobbling, no transformations on Pokemon Stadium, etc.).

Resolves to NO one week after market close if no evidence has been provided to trigger a YES resolution.

* A "greater-than-Bo5" set is any pre-determined series of more than 5 games. The player must state the planned number of games at the outset, and this number cannot change in a way which would shift the result in the player's favour (e.g. "I was going to do best of 7 but I lost 3-4 so I changed it to best of 9 and then won 5-4").

Possible clarification from creator (AI generated): Examples of Unsportsmanlike Exploits that would invalidate a set:

• Repeatedly causing Samus agents to shoot missiles from a specific distance that can be reflected back for reliable damage

• Using only Jigglypuff's rollout move to build percent and kill, as the agent cannot respond to this move

Examples of Allowed Strategies:

• Reacting to Fox's lasers with Marth's wavedash forward f-smash, even though this strategy would be insufficient against top human players