Friend challenge
Set the handicap. Make every move count.
Each player gets a finite number of coach calls, from 0 to 9. Spend them to survive, attack, or defend perfectly when the position matters most.
Challenge setup
White coach calls
Black coach calls
This tab plays as
Side
White and Black links can only move their own side. Admin is for local testing and can move both.
Nine calls is the ceiling by design: enough to close a big rating gap, still scarce enough that timing matters.
Start the challenge to generate secure invite links.