DGM: It's a minor difference, but you can also win it by playing B19 before D17 (board oriented top right). Game doesn't accept that variation even though it's valid and doesn't decrease your points. It does eliminate a ko threat, so isn't ideal, but rules in the collection description and puzzle instructions didn't say maximize ko threats.
It's a minor difference, but you can also win it by playing B19 before D17 (board oriented top right). Game doesn't accept that variation even though it's valid and doesn't decrease your points. It does eliminate a ko threat, so isn't ideal, but rules in the collection description and puzzle instructions didn't say maximize ko threats.