I am pleased as punch (which is, as I understand it, a very pleased drink?) to offer you four new puzzles from geometric visionary Catriona Shearer.
They are arranged in roughly ascending order of challenge, but can be consumed in any order (unlike most four-course meals).
Three Little Squares Went Out to Play
People kept asking Catriona if this one was a “trick question.” It’s not; just a tasty little hors d’oeuvre, which you may wish to nibble at for a while, or to eat in a single bite. (See the original here.)
The Parallelogram of Eternal Balance
I love this construction. Nothing but midpoints, connected with the elegance and economy of a calligrapher. “I’m sure this is a classic that’s been done many times,” says Catriona, “but it was new to me.”
(See the original here, including a beautiful animated solution, as well as a lovely solution by dissection.)
Catriona describes this as a riff on her very first puzzle (which I dubbed Garden of Clocks). I’ll take this moment to make the vapid point that, in addition to impeccable geometric taste, Catriona always chooses the perfect colors. (See the original here.)
Three Squares and a Slash
Some of Catriona’s puzzles yield to a single geometric insight. This one offers a different kind of pleasure. Catriona explains: “I doubt many people could do this one in their head – I couldn’t – but it makes the highlight reel on account of an unreasonably nice answer.” (See the original here.)