The World Puzzle Federation has launched another year of its annual series of online puzzle competitions! This year sees the fourth Puzzle Grand Prix season, which starts this weekend. (The fifth Sudoku Grand Prix season started two weeks ago.) If you’re sufficiently interested in puzzles to be reading this site, even if you think you only like escape rooms and have never taken the time to enter a puzzle contest before, you should get excited about this season and think seriously about taking part. The puzzles are fun and there’s no charge for taking part.
The name Grand Prix is an allusion to the tradition of motor races, for there are a series of rounds set by teams of setters from different countries; for instance, this weekend’s contest is the Serbian round, the next one will be the Slovakian round and so on. (There are eight rounds in the competition, each four weeks apart, and your overall score in the competition is the sum of your six best round scores.) Each round is available for 3½ days, from 10am GMT on Friday to 10pm GMT on Monday. During that 84-hour window, you can press the “start the timer” button at a point of your choice; you then have an hour to score as many points as you can by submitting answers to the puzzles from that round.
One difference between this year’s contest and that of previous year, is that every competition weekend there will be three parallel competitions in which to participate, each with its own one-hour paper. The three papers are not primarily graduated by difficulty but by the nature of the puzzles involved. Each paper includes puzzles of a variety of different difficulties, with higher credit awarded for puzzles that are expected to take longer to solve.
- Starting in the middle, “Class B” puzzles are culture-free language-neutral logic puzzles drawn from well-established World Puzzle Championship formats. Typically these will be grid-based constraint-satisfaction puzzles where “the objective is to fill in information on cells in a grid, based on logic or numerical constraints“.
- “Class A” puzzles may be new types, or new variants, that might be encountered at a World Puzzle Championship, and may be less accessible to people who aren’t familiar with the World Puzzle Championship standards.
- “Class C” puzzles are “understandable and solvable to a general audience” but are not necessarily language-neutral or culture-free; they might require a little external knowledge, or they might require “you either know it or you don’t” instinct rather than deduction.
The precise types of puzzles in each of the three contests for a round are announced a couple of days before it starts in instruction booklets. Entertainingly, the “Products” puzzle format in the upcoming Class C contest (see C16 to C18 of the instruction booklet) is not a million miles away from a puzzle style that I once constructed a few years ago!
There’s only one other wrinkle and it’s a slightly strange one. If you have played sufficiently many Grand Prix rounds in the past, or if you have been sufficiently successful when you have played in previous Grand Prix competitions, you will be declared a Class B participant and your score for any Class C contest you participate in will be regarded as unofficial. (If you have been particularly prodigiously successful in the past in previous Grand Prix competitions, you will be declared a Class A participant and your scores for both Class A and Class B contests will be regarded as unofficial.) This makes sense in that it means that the leaderboards for all three contestants will not be crammed with the same names – at least, unless a new solver massively overperforms! – but it may be disappointing for those solvers who are forced into a higher class and are most interested in the puzzles in a lower class. The advice has to be to solve the sets of puzzles that look the most fun and don’t worry too much about the classifications.
Nevertheless, this is another very exciting development. You only need to find one hour over the course of a long weekend in order to have a meaningful competitive experience, and you can choose from three different styles of puzzles, making the series more accessible than ever. If you want to dive deeply in, you could solve all three papers if you wanted to. The series is recommended to all readers; the more people who can find the style and level of competitive puzzling fun that’s right for them, the merrier!