This week we’re turning the clock back a century again, with a problem from exactly 100 years ago.

The Good Companion was a chess problem club running from 1913 to 1924 organising regular composing competitions attracting the leading problemists from all over the world. Jan Hartong (1902-1987) was one of the most distinguished Dutch composers of his generation.

It’s White to play and force mate in 2 moves against any black defence. Good luck!