Chess Challenger is an unreleased chess game for the ColecoVision that was announced back in 1983 before becoming vaporware and never getting an official release. Unfinished prototypes of the game then went around for decades before getting an unofficial homebrew release by independent developer CollectorVision Games, using the prototypes and old advertising as reference.

Winslinator in this run chooses to play against the CPU at the hardest difficulty and beats it as fast as possible. The moves made against the CPU were chosen to ensure that the CPU spends the least amount of time calculating its next move. For further details, you can read the author's notes.