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Posts: 79
Location: United States | (puzzle 4) What is meant by "loop that does not touch or intersect itself"? Is it like a Snake, where (copying from GP rules) "if two cells in the snake touch orthogonally, then they must be exactly one cell apart along the path of the snake, and if two cells in the snake touch diagonally, then they must be exactly two cells apart along the path of the snake"?
Also, there must be only one loop, right? The second to last sentence says "each circle belongs to a loop" (not "the loop").
Edited by mstang 2026-04-20 4:42 AM
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1999
  
Location: India | mstang - 2026-04-20 4:41 AM
(puzzle 4) What is meant by "loop that does not touch or intersect itself"? Is it like a Snake, where (copying from GP rules) "if two cells in the snake touch orthogonally, then they must be exactly one cell apart along the path of the snake, and if two cells in the snake touch diagonally, then they must be exactly two cells apart along the path of the snake"?
Also, there must be only one loop, right? The second to last sentence says "each circle belongs to a loop" (not "the loop").
Your understanding for the loop is correct, it is a snake-like loop.
'A' vs 'the' is just translation issues that I missed, only one loop. |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1999
Location: India | professorX - 2026-04-19 7:29 PM
In puzzle 7, for 0 sum in the bottom right corner, can a fully blackened cell be valid?
Yes that's valid. |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | professorX - 2026-04-19 4:55 PM
In puzzle 3 Jigsaw with tips, in one column CN , LI both are given. Does that mean CN is seen first and then LI ?
Since CN is given on top ....
It's not necessary. |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | professorX - 2026-04-19 7:29 PM
In puzzle 7, for 0 sum in the bottom right corner, can a fully blackened cell be valid?
Maybe. |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | %5BQUOTE%5DBarbitos+%2D+2026%2D04%2D19++9%3A22+PM%0D%0A%0D%0AI+believe+the+example+for+2%2E+Crossword%2DListovert+is+non+unique%2C+there+seems+to+be+a
d%2DListovert+is+non+unique%2C+there+seems+to+be+a+second+solution+where+FIFIR+and+RUBIA+are+swapped%2C+and+every+word%27s+grid+rotation+is+shifted+90
%2C+and+every+word%27s+grid+rotation+is+shifted+90%C2%B0+compared+to+the+given+solution%0D%0A%0D%0AGiven%2C+i%27m+having+a+very+hard+time+wrapping+my+
iven%2C+i%27m+having+a+very+hard+time+wrapping+my+head+around+the+logic+of+this+genre+and+might%27ve+missed+a+rule+that+disambiguates+this%0D%0A%0D%0A
+missed+a+rule+that+disambiguates+this%0D%0A%0D%0A%5B%2FQUOTE%5D%0D%0AYou+cannot+swap+FIFIR+and+RUBIA+because+the+letter+R+is+upside+down%2E%0D%0A
A+because+the+letter+R+is+upside+down%2E%0D%0A
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Location: China | In puzzle #3, does a pink circle allowed to be at the intersection of two words? If allowed, how does it transfer to #4? Pick one? |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | shedarshian - 2026-04-20 4:08 PM
In puzzle #3, does a pink circle allowed to be at the intersection of two words? If allowed, how does it transfer to #4? Pick one?
When transferring, select one of the two options that are suitable for you. |
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Posts: 151
Location: India | 3%3a+good+questrion%2c+and+is+the+Jigsaw+puzzle+independently+unique+or+is+one+supposed+to+find+a+solution+that+works+for+the+Pentoloop%3f%0a11%3a+Wha
lution+that+works+for+the+Pentoloop%3f%0a11%3a+What+is+meant+by+this+%22Words+should+read+from+left+to+right+and+right+to+left%2c+or+top+to+bottom+and
to+right+and+right+to+left%2c+or+top+to+bottom+and+bottom+to+top.++%22+why+are+and+and+or+used+interchangeably%3f+I+interpret+it+as+you+can+only+use+b
changeably%3f+I+interpret+it+as+you+can+only+use+both+directions+horizontally%2c+or+only+vertically.+%0a10%3a+%22Does+not+touch+itself%22+is+not+ambig
+%0a10%3a+%22Does+not+touch+itself%22+is+not+ambiguous.+Diagonal+%3f%0aPieces+can+be+repeated%3f%0a+
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | anurag - 2026-04-20 4:38 PM
3: good questrion, and is the Jigsaw puzzle independently unique or is one supposed to find a solution that works for the Pentoloop?
11: What is meant by this "Words should read from left to right and right to left, or top to bottom and bottom to top. " why are and and or used interchangeably? I interpret it as you can only use both directions horizontally, or only vertically.
10: "Does not touch itself" is not ambiguous. Diagonal ?
Pieces can be repeated?
3. At the very top of the page it says "solve two related puzzles".
11. Words can be read in any of the 4 directions, as in the example.
10. The standard rule for the loop: Loop does not touch or intersect itself. In the example, the V pentomino is used twice. In this sense, it is possible to repeat. But there is no third V pentomino among the 14 given pentominoes. Therefore, you cannot use the V pentomino three times. |
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Location: Philippines | Administrator - 2026-04-19 11:59 AM
The Puzzle Booklet is now available. Good luck to all participants! |
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Posts: 151
Location: India | %22Two+L+or+I+pentominoes+cannot+fit+entirely+in+2+x+5+and+5+x+2+rectangles.%22+This+is+automatically+implied+by+the+immediately+preceding+statement.+
y+implied+by+the+immediately+preceding+statement.+So+it+should+be+removed+to+avoid+confusion
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Location: France | Riad Khanmagomedov - 2026-04-19 6:09 PM
You cannot swap FIFIR and RUBIA because the letter R is upside down.
I don't think that happens in the alternative solution.
Describing it accurately is hard, so here's a link to what it looks like: https://imgur.com/gcIZnre |
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Posts: 12
Location: France | anurag - 2026-04-20 2:08 AM
"Two L or I pentominoes cannot fit entirely in 2 x 5 and 5 x 2 rectangles." This is automatically implied by the immediately preceding statement. So it should be removed to avoid confusion
It is not. In the example, this rule prevents swapping the leftmost L with the bottommost I, because then the first two columns would form a 5x2 rectangle that is filled with two I pentominoes and nothing else |
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Posts: 151
Location: India | Got+it%2c+Thanks!%0a |
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Posts: 73
Location: France | Hello everybody. Problem 6 - Azure and rose journey:
I dont understand the scheme L1 R2 L3 R1 L2 R3 L1... If letters L and R are for colours, is L for Azure (why?) and R for Rose, or is it possible to begin with Rose? |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | Puzlifouk - 2026-04-21 2:16 AM
Hello everybody. Problem 6 - Azure and rose journey:
I dont understand the scheme L1 R2 L3 R1 L2 R3 L1... If letters L and R are for colours, is L for Azure (why?) and R for Rose, or is it possible to begin with Rose?
I first composed the text in Russian, and then connected the translator. In Russian, the word azure is written with the letter L. I should have changed the letters L to A, but it's too late. You need to start with azure, as stated in the rules. |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | Barbitos - 2026-04-20 8:26 PM
Riad Khanmagomedov - 2026-04-19 6:09 PM
You cannot swap FIFIR and RUBIA because the letter R is upside down.
I don't think that happens in the alternative solution.
Describing it accurately is hard, so here's a link to what it looks like: https://imgur.com/gcIZnre
Unfortunately, Russians cannot browse websites with the .com domain. Upon prior request, I was allowed to use only the LMI website.
I'll try to explain it without following the link. If you turn the sheet 180 degrees, the letters R become legible (not rotated). Then FIFIR and RUBIA can be entered by looking at the correctly oriented letters R. |
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Posts: 73
Location: France | Fine ! And about pb 6, again :
If you have 4 aligned points A, B , C, D: is it possible to have segment AC (of length 2) in the line, and later, segment CD (of length 1) also in the line, or is it forbidden, because "segments of the same color do not touch each other)? |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | Puzlifouk - 2026-04-21 1:57 PM
Fine ! And about pb 6, again :
If you have 4 aligned points A, B , C, D: is it possible to have segment AC (of length 2) in the line, and later, segment CD (of length 1) also in the line, or is it forbidden, because "segments of the same color do not touch each other)?
If the segments AC and CD lie on the same straight line, then these are segments of the same color. They touch each other at point C, which is prohibited by the rules. |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1999
Location: India | Barbitos - 2026-04-20 8:26 PM
Describing it accurately is hard, so here's a link to what it looks like: https://imgur.com/gcIZnre
I can't see the image anymore but you can mail it to me (prasanna16391@gmail.com) or send on discord or whatever, I'll forward to Riad. |
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Posts: 79
Location: United States | Puzzle 3-4 answer format: It says both "Use ... X wherever there is a pair of letters in the same cell" and "Write the letters in alphabetical order in the white circles." Is this correct? These two statements seem to conflict with each other. |
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Posts: 151
Location: India | Word+xyz+placed+horizontally+intersects++a+vertical+word+ending+in+x+and+a+vertical+word+ending+in+z+and+a+vertical+word+starting+in+y.+This+breaks+th
+and+a+vertical+word+starting+in+y.+This+breaks+the+%0a%22parallel+words+must+be+spaced+1+cell+apart%22+rule.++Right%3f
%22+rule.++Right%3f
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | mstang - 2026-04-21 4:16 PM
Puzzle 3-4 answer format: It says both "Use ... X wherever there is a pair of letters in the same cell" and "Write the letters in alphabetical order in the white circles." Is this correct? These two statements seem to conflict with each other.
Initially, I suggested specifying pairs of letters in alphabetical order. Prasanna corrected the answer format and suggested specifying X in all cases with paired letters. Please specify X. |
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Moscow Puzzle Cup 2016 Author
Posts: 267
Location: Russia | anurag - 2026-04-21 4:27 PM
Word xyz placed horizontally intersects a vertical word ending in x and a vertical word ending in z and a vertical word starting in y. This breaks the
"parallel words must be spaced 1 cell apart" rule. Right?
I didn't find such a rule in the booklet. |
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