Indeed, it's interesting how the verification will be carried out. I also didn't save 5-10 times during one battle. Although, I can provide a detailed description, day by day and hour by hour ;).
In my opinion, in this tournament, a description of the playthrough is mandatory for each player. Otherwise, it will be impossible to understand.
P.S. if cheats are really not detected, then let everyone know so that everyone is on a level playing field.

Verification will be based solely on descriptions. And go back to the tournament discussion thread and vote for the rule that after a battle loop, everyone can officially use cheats :) That is, enter the code at the moment of the battle when your units are no longer taking losses, not receiving damage, not spending resources, and the enemy is slowly dying, and you need to grind for another thousand rounds to finally kill him :)
I also indicated the set of saves needed for verification:
save at the end of the day
save before the attack, from which your battle map is generated if the map plays an important role in the battle
save at the beginning of the battle - when almost no one has moved yet - to see the initial setup
save at the moment the battle loops
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for starters, this is enough :) but you also need saves - before the hero receives a new skill and before taking artifacts and scrolls from caches
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This does not mean that all of them must be requested from you for verification. They can check selectively, for example, one battle and the acquisition of some artifact. Therefore, to make life easier for himself and others, the player should have all the specified saves available. He doesn't know which ones will be requested. + a description of the leaders. This is quite enough for a correct verification of the playthrough!
Why take a description from a player who completed the game in a very long time. There's no need to bother him. Unless he wants to.