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I didn’t particularly like this puzzle. I’m not usually a fan of the “football league table”-type puzzle, and I found this one quite a tricky one to write a program for, and while it looks OK I’m not completely confident in it.

This Python program examines the possible game play. It runs in 5.6s. The number of points for a win can be specified on the command line (default = 2).

Solution:Q1. With 2 points for a win the decisive round is round 6; Q2. With 3 points for a win the decisive round is round 5.