Retroku
(Published on 5. February 2021, 22:07 by AMD)
A game of zugzwang-free chess (normal chess rules apply, but players are allowed to pass) was played on the 8x8 lower left part of the grid. During the game:
- No pawn moved from one square to another one containing a strictly smaller digit.
- No other piece (knight, king, queen, rook, bishop) moved from one square to another one containing a smaller or equal digit.
- None of the pawns that moved started one a square containing the digit 2.
For instance no pawn could have moved from the digit 4 to the digit 1,2 or 3. No knight could have moved from the digit 4 to a square containing the digit 1,2,3 or 4.
Penpa Link: Click Here
Solution code: 5th and 6th columns
Comments
on 10. May 2021, 21:51 by Johannes Quack
Interesting puzzle and fun to solve. But I'm quite sure, that it's not correct. To my suprise my solving code was accepted although my solution has at least one deadly pattern.
Answer: Thanks a lot for your feedback. Are you sure none of the pieces had to go through one the square of the deadly pattern? For instance if you are talking about the 4 cells 6-2 deadly pattern on the bottom right, a queen must have passed through the 6 ensuring a unique solution.
on 7. February 2021, 17:33 by AMD
Thank you, I'm glad you enjoyed it!
on 7. February 2021, 17:16 by Phurba
Nice puzzle! I like the idea of combining sudoku with retrograde analysis in chess.
on 6. February 2021, 22:43 by AMD
Added link to solve online
on 6. February 2021, 08:28 by AMD
adding sudoku tag
on 6. February 2021, 01:16 by jessica6
It is annoying to see a puzzle in the "No Sudoku" list and the description states "normal sudoku rules apply"...
Could you authors *please* add the sudoku icon to your puzzles?
As good as those sudokus might be, if I browse "no sudokus" I don't like to see them.
Answer by AMD: I added the tag. Thank you!
on 6. February 2021, 00:33 by AMD
Hi!
This is the first puzzle I setup. I tried to mix retrograde analysis (retros) puzzles in chess and sudokus.
Let me know what you think of the result!
I hope the rules are clear, if you have any questions or if you want any hints I will gladly answer.
