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Posted 20 hours ago

The Little Book of Grosse Gogen Puzzles 1: 50 Grosse Gogen Puzzles Book 1

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ZTS2023
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Having seen really advanced human solvers I was expecting the different techniques to be discussed. This image contains a puzzle that's made by user @international-dba, so it's not PD. OP can of course use it freely. I can't see why they would be hard to computer generate anyway, and the newspaper ones presumably are. Its easy to make a random solution grid and then you just need a simple brute force solver to allow you to remove given letters to the limit of uniqueness, or test for uniqueness with a fixed given pattern.

Sometimes the easiest solution may be the best. Recently I was watching this youtube video which goes into the methodology for solving Sudoku. and even without using the remaining clue (FIR) we know the final empty spot must house the final missing letter, F. I have tried to correspond with them to see if they might buy some of mine but so far they have not answered. Finally, as an improvement suggestion for the presentation: if you put the clue words to the right of the grid, and the alphabet below it (with the given letters already crossed out), it's much easier to work the puzzle, whether in printed form or in graphics software.In reality, we only care about the pairs of letters formed by the words. e.g. for VINE we wish to make adjacent [V,I], [I,N], [N,E] A is next to M, and it must have at least 4 unknown neighbours to house all of C,X,N and H. So the A is placed.

Out of the possible positions for a letter only 1 space may have enough adjacent spaces to complete all pairs I can see how it would be easy to write a program to create these as you just need to select enough strings of letters to ensure a unique solution. The puzzles produced by Paul Grosse are slightly different to mine in that the clues include random strings of letters. You can of course also make them without actual words, as for example in this one with just a single clue:The aim of the puzzle is to place the 25 letters (A-Y) in the circles so you can complete each word by following the lines (In a similar fashion to Boggle).

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