For newbies, this is a set of 12 (traditionally) very hard puzzles, including a couple of optimisers, with what appears to be no time limit. However, you will (almost certainly) find that one week is still not long enough to solve them all!Dear puzzle friends,
Septembers contest by Riad Khanmagomedov will start at September 23.
The contest will contain 12 puzzles, which you will have one week to solve.
The test file will be available at
Some of the most beautiful puzzles I have ever seen have appeared in the Diogen quarterly puzzle contests.