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Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026
   LMI Tests -> Puzzle Ramayan15 posts • Page 1 of 1 • 1
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-07 5:56 PM (#39193 - in reply to #39192) (#39193) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		The submission page is live with the Instruction Booklet.
mstang
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-08 11:11 AM (#39196 - in reply to #39192) (#39196) Top





Posts: 79
202020
Location: United States		Interesting stuff! I have some questions though:

- I am having a bit of trouble with the Guide Arrow [Loop] rules. Is the following a correct paraphrase?

Shade some empty cells so that no two shaded cells are orthogonally adjacent and the remaining unshaded cells form one orthogonally connected area, which contains exactly one loop. (A 2x2 square of cells is considered a loop.) Cells with stars must be unshaded and part of the loop. Cells with arrows must be unshaded, but not on the loop. An arrow indicates the only direction in which one could begin a path to the loop without going through a shaded cell or backtracking.

- For the Water Walk [Isowatari] example, the Isowatari part of the puzzle is solvable without any deductions from the Water Walk part. Is this necessarily true for the contest puzzles as well? (I'm guessing not, but...)
Menderbug
Subject: Re: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-09 1:13 PM (#39233 - in reply to #39192) (#39233) Top




Posts: 18

Location: Germany		1. That's correct.
2. The Isowatari part of these puzzles is not necessarily solvable on its own.
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-09 10:37 PM (#39245 - in reply to #39192) (#39245) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		Version 2 of the IB has been uploaded.
Changes -
1. Points Distribution added.
2. Number of PB pages added.
3. The rules of puzzle 10 and 11 have been modified for better understanding (I borrowed the wording above a bit)
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-09 11:44 PM (#39246 - in reply to #39192) (#39246) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		Contest start pushed by 30 minutes.
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-10 12:15 AM (#39247 - in reply to #39192) (#39247) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		Password Protected Puzzle Booklet available to download.
professorX
Subject: Re: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-10 12:34 PM (#39250 - in reply to #39192) (#39250) Top




Posts: 48
2020
Location: India		Fun+round+
xetto
Subject: Re: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-11 12:50 AM (#39266 - in reply to #39192) (#39266) Top




Posts: 1

Location: Poland		lovely+round!+%e2%ad%90%f0%9f%8c%9f%f0%9f%8c%88%e2%9d%84%f0%9f%92%9c%f0%9f%92%99
WA1729
Subject: Re: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-11 10:37 PM (#39284 - in reply to #39192) (#39284) Top



Shading and Loops (PR 2016/17) Author

Posts: 76
202020
Location: United States		Super+fun+round%2c+so+many+clever+ideas!+%f0%9f%92%99+My+favorites+were+1+Choco+Banana%2c+9+Guide+Arrow%2c+10+Guide+Arrow+Loop%2c+14+Mukkonn+Enn%2c+17
row%2c+10+Guide+Arrow+Loop%2c+14+Mukkonn+Enn%2c+17+Pento+Loop%2c+20+Water+Walk+%e2%9d%84
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-13 3:52 PM (#39308 - in reply to #39192) (#39308) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		The website is behaving a bit weirdly right now, I advise not starting the contest for a bit while we figure it out. If you do start and you cannot submit for whatever reason, then as a reminder you can send an email to logicmasteradmin@gmail.com with your answer keys (obviously this means you forego the instant grading option so it is not advisable unless you cannot submit on the website).
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-13 10:01 PM (#39316 - in reply to #39192) (#39316) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India		The site is working fine again, the issues were minor but I'll extend the contest by a day anyway.
prasanna16391
Subject: RE: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-15 1:07 PM (#39353 - in reply to #39316) (#39353) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 2003
2000
Location: India
prasanna16391 - 2026-04-13 10:01 PM

The site is working fine again, the issues were minor but I'll extend the contest by a day anyway.


The extension is done now.
dipkmr
Subject: Re: Shading & Loops - 10th - 16th Apr 2026 - Puzzle Ramayan & IPC Qualifier 2026 @ 2026-04-16 8:50 PM (#39385 - in reply to #39192) (#39385) Top




Posts: 18

Location: India		%f0%9f%91%8d
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