They are ideal for teaching chess methodically, as they use a small number of pieces each time to build up knowledge and skill.
They are used extensively by Chess in Schools and Communities in over 300 UK schools.
One problem - particularly now online teaching has become a necessity - is that most computer programmes cannot be used to set up the mini-games, as they class them as illegal positions (because there are no kings on the board.)
Acorn Chess is a brand new venture, which allows mini-games to be set up easily and offers various levels of engine strength to test a player's skill.
I have tested Acorn Chess and I believe it offers an excellent set of resources for chess tutors to use in group or individual settings.