The Checkmate problem statement is not simply that “men don’t engage”.

It is that engagement often fails at predictable points:

Uncertainty is managed privately;
Independence is protected;
Institutional tone can trigger resistance;
Many interventions target individuals but overlook the small networks
This is where noticing and prompting actually occur.
More…

This block sets out the problem space to which Checkmate is responding

Checkmate’s core hypothesis is that timely action often depends gaining on a small “edge” in a man’s everyday network:
a mate noticing a pattern and using buddy concern to nudge early action.