Tag Archives: nikoli

Puzzle 62: Totally Antisymmetric

Masyu Fillomino Draw a loop following regular Masyu rules. The loop passes through centers of squares and can only turn at centers of squares, and can only turn 90 degrees. It might pass some circles. Whenever it passes a black circle, it turns but doesn’t turn both before and after it. Whenever it passes a white circle, it doesn’t turn but turns either before or after it (or both). The remaining cells are to be filled with numbers following regular Fillomino rules; circles not passed by the Masyu loop becomes Fillomino clues.

Estimated difficulty 3.5/10
Master target time 02:00
Expert target time 05:00
Answer PNG (11 kB)
Solution Not yet present

Puzzle 62: Masyu Fillomino

Puzzle 62: Totally Antisymmetric
Masyu Fillomino

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Puzzle 61: A Building of Fillomino

See-Through Fillomino Stack the grids in a proper order. Each grid is a valid Fillomino grid. In addition, there exists light blue squares with a small G; such square represents glass, and instead of a standalone number, the glass contains the number at the exact same position at the grid exactly below it. (If it’s another glass, then by definition it should also have some number that can be seen by the grid above.) However, all glasses at the first floor (bottommost grid in the stack) see nothing; they contain empty square.

Estimated difficulty 3.5/10
Master target time 02:00
Expert target time 05:00
Answer PNG (11 kB)
Solution Not yet present

Puzzle 61: See-Through Fillomino

Puzzle 61: A Building of Fillomino
See-Through Fillomino

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Puzzle 60: Insanity

Fillomino Potpourri Follow regular Fillomino rules. In addition, the following variations apply:

– Snake: There exists a snake in the grid, occupying some of the cells. The snake is a non-touching path. The snake passes through all dark gray cells marked S.

– Tapa: Some of the polyominoes are shaded. Note that a polyomino must either be shaded completely or not shaded at all. These shaded polyominoes form a Tapa wall. The wall obey the green Tapa clues: A set of numbers in a light green square with a dim T is a Tapa clue, which tells the blocks of consecutive cells that belong to the wall in the eight squares adjacent to it. Different wall blocks must be separated by non-wall cells.

– Clones: There are two marked 3×3 matrices; one in the top-left quadrant and one in the bottom-right quadrant. These two matrices must be identical without rotations/reflections. This includes whether a cell is a snake segment and whether a cell is shaded (belong to the Tapa wall).

– No-Rectangle: No polyomino is shaped like a rectangle (or square).

Difficulty 8.0/10 • Target times 06:00 10:00 30:00 2:30:00
Solution Answer (PNG, 8 kB) • Solution (PDF, 295 kB)

Puzzle 60: Insanity

Puzzle 60: Insanity
Fillomino Potpourri

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Puzzle 57: Ridiculous Changes

Fillomino Operations Divide the grid into polyominoes. Fill each cell inside a polyomino by the size of the polyomino, after applying all mathematical operations it contains (multiplication/division before addition/subtraction). For example, a 5-square polyomino containing -3 and ×2 will have the number 5×2-3 = 7 on each of its cells. Polyominoes that contain the same number may not be orthogonally adjacent.

Difficulty 6.5/10 Master target 4:00 Expert target 12:00

Puzzle 57: Ridiculous Changes
Operation Fillomino

EDIT: VERSION 5 fajshnkkbkxmidcvger I hope it’s the last update. I’m pretty sure it has a unique solution, but my intended solution requires a really large-scale (as in the whole thing) deduction as the first step. And hence, the expert time is doubled. Whee.

Erm. So I lied and posted a new puzzle before April. This was made while I was doing chemistry finals (after completing it).

Yes, I believe that 6.5/10 is accurate for a 7×7 grid, but I didn’t give this to my testsolvers so I don’t know what the others think. I’m giving this now, and I’ll edit the difficulty/time later after getting responses.

If you find the rules hard to understand, I suppose I should post an example…

Also, did you notice Puzzle 28 and FFF 25 are redone? (The originals were broken and I gave up finding a way to fix them.)

FFF 25: Yet Another Explosion

Norinori Fillomino Follow regular Fillomino rules. In addition, the regions form a valid Norinori grid: It must be possible to shade exactly two squares in each polyomino such that each black square is adjacent to exactly one other black square.

Difficulty 3.0/10 Master target 1:30 Expert target 2:30

FFF 25: Yet Another Explosion
Norinori Fillomino

Another out-of-sequence puzzle. The original FFF 25.

Also, it’s great that the original puzzle was broken; I managed to fit a polyomino of size over 4 times the largest given in this puzzle. Yay.

Puzzle 28: Square Battle

Fillomino Shapes Follow regular Fillomino rules. In addition, the given shapes must appear in the grid, at least as many as given.

Difficulty 4.5/10 Master target 1:00 Expert target 6:00

Puzzle 28: Square Battle
Fillomino Shapes

Renumbering is a pain. So, let’s make a puzzle that fills in the gap instead.

Here was the original Puzzle 28. Because ksun48 asked for a hard Fillomino variation, I believe that this is sufficiently hard, albeit the easy master target.

Also, yes, I don’t think Sky is going to tell his tale again. Most likely I will rephrase what he’s going to say, just like the paragraph two paragraphs above this.

Puzzle 56: Party Quadrants

Region Party Fillomino This is a hybrid of Clones Fillomino and Extra Region Fillomino. The two blue 3×3 grids are from Clones; they must be identical. The two red 3×3 grids are from Extra Regions; each of the grids must form another valid Fillomino grid.

Difficulty 3.5/10 Master target 2:30 Expert target 7:00

Puzzle 56: Party Quadrants
Region Party Fillomino

Yes, Sky is really inspired today. Why not?

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FFF 28: Sequences End Here

Fancy Fillomino February: This is a series of 28 (twenty-eight) 7×7 Fillomino puzzles over the February. Every 00.00 UTC+7 a new puzzle will be up. The basic Fillomino rules apply unless otherwise indicated.

Battleships Fillomino Follow regular Fillomino rules. Afterwards, shade some of the polyominoes black so no two black polyominoes touch each other even diagonally. The numbers outside the grid tells the number of shaded squares in the row/column.

Difficulty 3.0/10 Master target 0:20 Expert target 2:00

FFF28: Sequences End Here
Battleships Fillomino

Sky is tired to make stories.
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FFF 27: Epic Combo

Fancy Fillomino February: This is a series of 28 (twenty-eight) 7×7 Fillomino puzzles over the February. Every 00.00 UTC+7 a new puzzle will be up. The basic Fillomino rules apply unless otherwise indicated.

Extra Region Fillomino In addition to the regular Fillomino rules, the green cells form a 4×4 grid that is also a valid Fillomino grid.

Difficulty 3.5/10 Master target 1:30 Expert target 2:30

FFF27: Epic Combo
Extra Region Fillomino

So, how can Sky mesh two puzzles in one grid and one rule? Well, besides a pretty common Samurai variation, this is also possible.
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