Boil chicken in large pot for 30 minutes or till it's done. When chicken is done put it in a large bowl for cooling. Keep water from chicken in the pot. Add frozen broccoli cuts and boil till its tender. Drain broccoli in a strainer.
Sauce: Put curry in a large bowl and add 2 cups of water. Microwave it for 1 minute. Mix curry thoroughly. Add cream of chicken soup, and mayo. Mix thoroughly. Shred chicken in bowl. Add broccoli cuts, half of the cheese, and half of the curry mix. Mix everything thoroughly.
Pour mixture in a large baking pan. Spread chicken mixer evenly in the pan. Pour remaining curry mix on top of the chicken. Spread evenly. Spread remaining cheese over the curry. Crush Ritz Crackers and put it on top of the cheese.
Preheat oven 375 degrees F. Put the casserole in the oven for 30 minutes, to heat thoroughly. Let the casserole sit for 5 minutes before serving.