Download patch
ref: 8629ef8974aa379e578531c4b75ebe8c045286c8 parent: 7acc554805a471103bef0a74e4d64fef945dddb9 author: Simon Tatham <anakin@pobox.com> date: Fri May 22 15:00:01 EDT 2020
groupsolver: show working when using -v on ambiguous puzzles.