Difficulty: medium
Theme: Logical
Theme: Logical
Have a Masyu puzzle I constructed on request from an acquaintance. No clue how often I'll keep updating this blog, but I think I have something for here that I should probably post at some point.
Showing posts with label Masyu. Show all posts
Showing posts with label Masyu. Show all posts
Puzzle #15
Have a Masyu puzzle I constructed on request from an acquaintance. No clue how often I'll keep updating this blog, but I think I have something for here that I should probably post at some point.
Puzzle #13
This is a Go puzzle.
Oh wait no, it's actually a Masyu. (Click on image to get a Masyu grid. With hope, this will work, though I'm not immediately sure as Blogspot's "Preview" option doesn't allow you to click on links.)
Oh wait no, it's actually a Masyu. (Click on image to get a Masyu grid. With hope, this will work, though I'm not immediately sure as Blogspot's "Preview" option doesn't allow you to click on links.)
Difficulty: hard
Theme: White Wins
Theme: White Wins
I made a joke when watching someone stream Go (aka Baduk, aka Weiqi), about Go positions actually being Masyu positions. Several weeks later, the idea was still bobbing around in my head, so I made this weird puzzle to go in a post on /r/badukshitposting. It also involves repeated application of a trick that should be known to all intermediate/advanced Masyu solvers.
(To save you unnecessary checking, there are no "3-white-circles-in-a-row" configurations in this position.)
Puzzle #10
This is a Quadrant Clue Placement Masyu puzzle, a variant of Masyu. In addition to the rules of Masyu, within each quadrant, add the corresponding given 3x2 arrangement of clues, given at right. Blank squares within the arrangement must lie within the quadrant, and should be treated as "transparent" in that if they overlap an existing clue, the existing clue continues to exist. Arrangements may NOT be rotated.
Difficulty: Medium
Theme: Two by Two
Theme: Two by Two
Puz-PRE link. (Note that this is a link to the editor, not the solver. This is so that you can add the clues yourself.)
So... I dreamt that I was solving a puzzle of this genre. Then I woke up halfway through solving and got really pissed off that I couldn't finish the job. So I got up and constructed this puzzle. (Turns out the puzzle I was solving in my dream was either a Liar Quadrant Placement Masyu puzzle, or I'd made some really stupid false deductions in my dream. Funny how my subconscious was able to determine that we'd need a ton of black circles in the arrangements to force things, but wasn't able to make good deductions?
This one probably has a bit more case-bashing than my puzzles usually do.
Puzzle #9
This is a Masyu puzzle.
Difficulty: trivial
Theme: Diagonal... Symmetry?!
Theme: Diagonal... Symmetry?!
Alright, so I took my Shindanmaker result a little too literally with "must have one line of symmetry". But it never said the line of symmetry had to go through the centre!
An alternate theme name I could have gone with is "Mostly-White Spade". But I think this current theme stands out best. :P
Puzzle #8
This is a Masyu puzzle.
Difficulty: trivial
Theme: Diagonal Antisymmetry
Theme: Diagonal Antisymmetry
What's this? A simple Masyu puzzle for my first post in ages? Yes.
On Twitter right now, a few Japanese puzzlemakers are using a Shindanmaker to decide what puzzles to create. My task was to create an 8-by-8 Masyu that had givens with linear symmetry. Naturally, I decided to make one with antisymmetry because antisymmetric Masyus are considered beautiful.
And of course, I forgot about the size of the grid when making it. And it also turned out way easier than I'd have liked it. Ugh.
Oh well, I'm still posting it here for content because I still think it's a nice theme. Thanks go to mathgrant for helping me place a pair of givens to give a unique solution when I thought I'd run into something unfixable.
Hmm, the word "run" in "I thought I'd run into" could be in either past perfect tense or present conditional tense. Interesting.
Anyway, I think I'll post the 8x8 Masyu if I construct it. Which I hopefully will.
Puzzle #7
This is a Deformable Total Masyu puzzle, a variant of Masyu. In addition to the rules of Masyu, all possible circles have been given; i.e. it is not possible to add any more circles to the grid so that it is consistent with the solution. Further, any white circle may instead behave as a black circle.
Puz-PRE link. (Note: Puz-PRE has neither the "total" nor "deformable" constraints programmed in. The solver may incorrectly mark incorrect answers as correct, and may mark a valid answer as incorrect.)
This is truly the most evil puzzle on my blog so far. Expect to use every single constraint in the rules, along with a bunch of techniques you may have not encountered before. I honestly don't blame you if you stop trying after 10 seconds.
And remember, you have to prove uniqueness!
Puzzle #5
This is a Total Masyu puzzle, a variant of Masyu. In addition to the rules of Masyu, all possible circles have been given; i.e. it is not possible to add any more circles to the grid so that it is consistent with the solution.
Difficulty: hard
Theme: Clue minimalism and logic.
Theme: Clue minimalism and logic.
Puz-PRE link. (Note: While a valid solution to this puzzle will be marked as correct, Puz-PRE does not have the "total" constraint programmed in. The solver may incorrectly mark incorrect answers as correct.)
This is one of the most stunning puzzles I've ever made, I think. The break-in is almost completely original (in that I came up with it and then found that it was already used by someone else, like two other break-ins I've "discovered"). While this puzzle still isn't MellowMelon-difficulty (it'll take a long while before I get there!), and it doesn't require excessive trial and error, it's definitely not a Total Masyu for the uninitiated.
EDIT: Twitter user @That_Scar has asked the following question:
EDIT: Twitter user @That_Scar has asked the following question:
To this, I respond that I don't consider a logic puzzle to be solved unless one has proven uniqueness of solution. Finding a solution may be easy, but proving that it's unique is the hard part.@edderiofer Am I stupid or is this pretty easy? [SOLUTION IMAGE REDACTED]— ThatScar (@That_Scar) September 16, 2016
Rules of Masyu
Draw a single loop through the centres of some cells according to the following rules:
1. The loop may only travel horizontally or vertically, never diagonally; all turns are right-angled turns. The loop may only turn at the centers of grid cells. The loop may not cross itself or branch off; that is, from any cell centre, there can be only 0 or 2 loop segments extending from it.
2. The loop must pass through every circle.
3. The loop may not turn at a white circle, but must turn at at least one of the adjacent cells in the loop.
4. The loop must turn at a black circle, but may not turn at either of the adjacent cells in the loop.
Below is an example and its answer.
1. The loop may only travel horizontally or vertically, never diagonally; all turns are right-angled turns. The loop may only turn at the centers of grid cells. The loop may not cross itself or branch off; that is, from any cell centre, there can be only 0 or 2 loop segments extending from it.
2. The loop must pass through every circle.
3. The loop may not turn at a white circle, but must turn at at least one of the adjacent cells in the loop.
4. The loop must turn at a black circle, but may not turn at either of the adjacent cells in the loop.
Below is an example and its answer.
Subscribe to:
Posts (Atom)