I'm trying to teach them to define their own win. Not losing their queen is a Win. Taking one of my pieces is a Win. For the 4 yo, making me stop and think about the next move for more than 30s is a Big Win.
I read a book by called
Finding Flow a while back, and it really changed how I look at competition. In all of their 'practice' games, I just want the kids to define a challenge which is just at the edge of their capability so they can improve their instincts and learn to trust them.
FWIW - I've never beat my Dad at billiards. Maybe knocking around balls for fun I won some...but never when we were playing 'for real'. And I worked for awhile at a pool hall, and played in tournaments at a solid 8 speed. But when he was a kid, he and his brothers were too poor to go to the swimming pool all the time, so they went to the bar and played pool or to the park and played tennis. But overall, I want them to feel like beating me is absolutely impossible. Until it isn't.
Mom gives them wins, Grandpa gives them wins, they play against each other and get wins, the 6 yo is in 'Chess Club' now and gets wins...
But Papa don't lie. Papa is The Truth.