The pattern map: 22 case studies, one table

The 22 case studies against the pattern lessons in one matrix: how to read it, counts from a program in four languages (Strategy in 17 rounds, Observer in 10 but built in 5, State in 9), five rounds with no Strategy, the one pattern that is only a follow-up, the six-round route that meets every built pattern, the lessons the rounds barely use, and why a map is not a checklist.