[quote=@Etcetera]
<Snipped quote by Armed Forces>

Hence the puzzle. A contest was being held with the following rules: You have a small bottle of poison that won't kill you; it will just make you violently ill for the next day. You're offered a substantial sum of money if, at midnight that night, you can intend to drink the poison by noon the next day. You do not have to drink the poison to win the game—you receive the money at 12:05 at night and are fully free to choose to not drink the poison once you receive the money. Is it possible to win the game but not drink the poison?
[/quote]

It doesn't seem as complicated to me. That answer depends on the circumstances of the decision to change intentions, mainly involving a lack of a preemptive intention to do so. An intention to change intentions is no intention at all. It is just an indicator of hat the true intentions always were.