Is the Superdokey Puzzle the Ultimate Brain Teaser?

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Discussion Overview

The discussion revolves around the Superdokey puzzle, a variant of Sudoku with an additional rule. Participants explore the rules, share their experiences, and discuss the difficulty level of the puzzle.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes the rules of the Superdokey, emphasizing the additional rule that requires each digit to appear only once in identical positions across subgrids.
  • Another participant expresses enthusiasm for Sudoku and the Superdokey, indicating a personal interest in the puzzle.
  • A participant offers to provide hints and feedback on the puzzle's difficulty, suggesting a collaborative approach to solving it.
  • One participant shares a specific hint for the first move in the puzzle, highlighting the uniqueness of certain digits in the grid and the implications of the additional rule.
  • Another participant suggests starting with a specific Superdokey puzzle that has multiple possible first moves, indicating a strategy for approaching the puzzle.

Areas of Agreement / Disagreement

Participants generally express interest in the Superdokey puzzle, but there is no consensus on its difficulty level or the best strategies for solving it. Some participants find it challenging, while others are still assessing its difficulty.

Contextual Notes

Participants mention specific strategies and hints for solving the puzzle, but there are no detailed discussions on the mathematical or logical foundations behind these strategies. The effectiveness of the hints and strategies remains unverified.

Who May Find This Useful

Individuals interested in puzzles, particularly Sudoku enthusiasts, may find this discussion engaging and useful for exploring a new variant of the game.

Andre
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http://home.wanadoo.nl/bijkerk/soduky12.GIF

This looks a lot like a very popular pastime puzzle with millions of addicts but it is not, it's a superdokey with one more rule. For the lay persons, the rules of the original game are:

http://home.wanadoo.nl/bijkerk/soduky6.GIF

1: In each row(yellow), each digit (1-9) shows up only once
2: In each column (green), each digit (1-9) shows up only once
3: In each 3x3 sub-grid(red), each digit (1-9) shows up only once

The additional rule to make it a superdokey is:

4: In each identical position in each subgrid(blue), each digit (1-9) shows up only once

All my 500 (and growing) superdokeys have only one single solution. There is always at least one clue and guessing is not required. Puzzling is, a lot.

Happy solving and season greatings
 
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Hey, thanks, I love Sudokus! Looks tempting. :cool:
 
You're welcome. I like a little feedback. Easy? Too difficult? Want hints?
 
Andre said:
You're welcome. I like a little feedback. Easy? Too difficult? Want hints?

I saved the link, haven't found the time to start yet though.
 
It a tough one, isn't it.

Here is http://home.wanadoo.nl/bijkerk/sudoku-hint.GIF for the only possible first move.

Notice that the digit in the bright green colored box is unique compared to all other colored boxes. Notice also that the orange/amber nine makes the difference with the original game, in which there would have been not enough information to find any move.

It could have been found by eliminating as many as possible positions for that digit in that 3x3 subgrid, including the use of rule nr 4, http://home.wanadoo.nl/bijkerk/soduky9.GIF indicated in dark blue. For the two remaining positions (light blue), only one can fit that digit by elimination of the others.

Anyway, perhaps start off with http://home.wanadoo.nl/bijkerk/superdokey-10.GIF , the nr-1 in the book with nine possible first moves.
 
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