Happy Birthday, Gliperal!
(Published on 4. June 2023, 06:51 by KNT)
For your birthday, this is a combination of a standard Japanese sums (1-9) with halligen. All clue locations for the halligen have been marked with stars, but their values are for you to determine. Further, every cell in the grid must contain a digit except those that are water cells with neither ship nor lighthouse, and no digit may repeat on any island. You must be careful! The Japanese sums is also indeed rather normal, indicating sums of digits between empty cells... but this does mean a single sum may even stretch over ships, islands, and lighthouses!
The last thing on your mind must be the letters, as twelve are given as opposed to the normal 10. The simple explanation is that 11 of them indicate the values 0-10, and the last is 'irrwisch' - it replaces a different digit in each occurrence. That should be everything, I hope you enjoy charting these waters!
The puzzle follows:
Solution code: Row 11, Column 11. X for empty cell, and S after each ship cell.
Comments
on 20. May 2024, 22:21 by madhupt
An absolutely brutal masterpiece! What great fun to solve it during free time over two days. KNT is something else when it comes to seeing puzzles. Thanks a lot for sharing this masterpiece.
on 20. May 2024, 21:49 by madhupt
A quick clarification please # can the ‘irrwisch’ take the value of 10 or should it always be digit?
—- Above may be ignored. It has to be a digit.
on 28. July 2023, 08:04 by Silverstep
I can't *believe* it didn't occur to me to do this 4 weeks ago. New solvers! In this comment section... I present... to you... the full rules of halligen... IN ENGLISH!
Each cell in the grid is either land or water. There are no 2x2 of water, and all water are orthogonally connected.
Some water cells can contain a "lighthouse" or a "ship". If a given clue (denoted by a star in this puzzle) is on land, it counts the number of land cells in its maximal connected group. If a clue is on water, it represents a lighthouse and counts the total number of ships in its row and column.
Ships can't touch other ships and lighthouses, even diagonally. Lighthouses don't touch each other orthogonally, but may touch diagonally.
Have fun solving!
on 18. July 2023, 16:31 by ibag
Really fantastic! And for me the most difficult of your puzzles so far. I look forward to many more birthday presents for your puzzle friends ... ;-)
on 17. July 2023, 23:42 by Piatato
A truly epic journey, fantastic!
on 30. June 2023, 10:53 by Silverstep
I used 6 colors for notating -- land, non-digit, water of unknown type, digit of unknown type, ship, and non-ship. I think I did okay.
As usual, I did not manage to complete a KNT birthday present in under 4 hours.
on 25. June 2023, 16:52 by KNT
@Silverstep: No, the clues are in Base 10, and the digits in the grid are from 1-9. The letter that replaces the value '10' will always appear by itself.
on 25. June 2023, 16:50 by Silverstep
Rules clarification: How does the digit "ten" work? Are the clues written in base-11?
on 15. June 2023, 15:13 by wildbush7
Would be helpful if you posted the rules for halligen. The link comes up in German.
on 5. June 2023, 20:09 by Jesper
Great puzzle, thanks!
on 5. June 2023, 01:23 by Gliperal
Best birthday ever :D
I don't know what made me deserving of such a cool gift, but I sure am happy it did is!
on 5. June 2023, 01:02 by Myxo
You know it's a great puzzle when it is so much fun even when solving the ending first.
Happy birthday Gliperal!
on 4. June 2023, 11:53 by Agent
Happy birthday Gliperal, I hope you and others on the portal will enjoy this masterpiece! I really enjoyed testing it, there's a nice flow of beautiful and surprising deductions in typical KNT fashion, nothing was noticeable hard but it will require a good strategy to annotate the grid.
on 4. June 2023, 09:39 by Niverio
It was an absolute pleasure to test this puzzle. In my opinion, some of KNT's finest work, very fitting for a legendary setter such as Gliperal. Happy birthday! This puzzle is consistently challenging and is packed with fascinating deductions everywhere.
