This week’s puzzle was an endgame study composed by the great Alexey Troitsky in 1896.

I took it from Improve Your Chess Calculation by RB Ramesh (New in Chess 2022). My review of this book will be published within the next few days.

White wins by using the bishop and pawn to set up a barrier preventing the black king from reaching the corner, then approaching with the king:

You can play through the solution here: click on any move for a pop-up window.

Congratulations to everyone who solved this correctly. I think Maxim was the first on WhatsApp.