What infraction is committed when a player intentionally peeks at the cards from which his neighbor is selecting during a draft?

The infraction committed when a player intentionally peeks at their neighbor's cards during a draft is a Hidden Information Violation. This violation occurs because the player is accessing information that is not meant to be available to them, violating the principle of maintaining the secrecy of their opponent's strategic choices. In competitive card games, players are expected to respect the boundaries of information available to them at all times, ensuring that no one is privy to decisions or resources that are not theirs.

Collusion involves illicit cooperation with another player to manipulate the outcome of the game, which is not applicable in this scenario as it focuses solely on accessing hidden information. A Cheating - Game Rule Violation would imply a broader or more general rule infraction outside of hidden information specifically. Manipulation of Game Materials usually pertains to physically altering or tampering with the game components, which does not pertain to this situation either.

In this case, the essence of the violation lies in the improper gathering of information that should remain private during the drafting process, solidifying why Hidden Information Violation is the appropriate classification.