Karthikeyan's helpmate puzzle explained
India's 38th Grandmaster Karthikeyan Murali is well-known in the chess fraternity to be someone with a unique knack for chess compositions and problems. He claims solving to be his primary area of interest and being a strong 2600+ GM of over-the-board chess he most certainly is a very capable solver, but it seems his competence as a composer too is quite something to be reckoned with. Earlier today he posted a curious chess position on twitter which he mentioned to have composed a few years back. In this article we unravel the intricacies of this unusual problem and try to understand what makes it so special. Before reading our analysis do make sure to understand the stipulation well and have a go at it on your own!