One of the most popular computer games in the 1980s was "Boulder Dash", first presented in 1984 for Atari computers, which was soon ported to all major home computer platforms.

How time flies: In the past, you had to load such games for minutes from a tape drive for compact cassettes - "Datasette" was the name of this archaic storage technology.

Today you can just play them in your browser.

On the cute, old-fashioned website www.rockbasher.com you will find a current adaptation of the game principle with a variety of levels, kindly not only free of charge, but also completely free of advertising. And this is how it works: Your task is to have your character collect all of the sparkling diamonds on the playing field and then head for the exit marked with "Exit". It is controlled very easily using the cursor keys.

Sometimes, however, there are stones in the way that you have to clear away: you can either push them to the left or right - or you can stand under a stone and then run away. The stone then falls down following gravity and is no longer in the way. In some places you first have to collect keys in order to open locked doors. Later on, more complex levels are added, where you have to occasionally throw a hand grenade or use a stick of dynamite to make your way. By pressing the letter "H" (Help) you will find out all the shortcuts you need to control your figure. Have fun!

Now our riddle:

What is the name of the solitaire game that one of the Boulder Dash developers later programmed?

Please send your proposed solution to netzraetsel@faz.de;

We will raffle an eBook shopping voucher worth 25 euros from all correct entries.

The closing date for entries is June 2, 2021, 9 p.m.

In the past week, “2,727,840 points” would have been the correct solution;

the winner was notified in writing.