About Vibe Puzzles

Logic puzzles in the browser. Every puzzle has exactly one solution.

Questions, ideas or a bug to report? Write to fipreroll+app@gmail.com

How are the puzzles made, and how hard are they? Watch it step by step

Build

Version
0.8.0
Commit
6c005d3
Built
10/19/2026, 10:45:04 AM
Source code
GitHub

Changes

What changed in each version, newest first. The list is kept in English.

Not in a version yet

New

  • Loop in every size: 10×10, 15×15, 20×20 and 25×30, each Normal and Hard, and Loop's own daily (10×10 Normal), weekly (15×15 Hard) and monthly (25×30 Hard) puzzles, with their streaks and leaderboards. On the bigger boards the loop winds across the whole board, so no corner is left empty. Loop is no longer marked as early access.
  • Inside: a new page, linked from the About page (and from the footer on larger screens), shows how a Sudoku is made, like a short film on the Sudoku board. The computer fills an empty grid, backing out of dead ends; it takes digits out two at a time, putting back those a person could not do without; and it solves the result the way a person does, with pencil marks, to find how hard it is. Pause it, step through it, rewind chapter by chapter or play it slower or faster. "More detail" adds the technical side, and "Another example" shows the making of another puzzle. In English and German.
  • How was this puzzle made?: once you have solved a puzzle, the "More" menu opens the Inside film of how that very puzzle was made. It does so for Sudoku 9×9 Easy and Normal (the daily one too), Pinwheel 5×5 and 7×7, Tetroid 6×6 and 8×8 Normal, and Loop 5×5 and 7×7 Normal. For other puzzles, and for some older puzzles of the collection, the page says why there is no film of it and shows how a smaller one is made. There, "Another example" makes another puzzle of the same type.
  • Inside: Loop: a fourth film shows how a Loop is made. A region of cells grows on an empty board, and its border is always one loop; a cell that would make the loop touch itself or leave a hole stays out. Every cell gets the number of loop edges around it. Then numbers come out while the rules still find the loop; where they would get stuck, the film shows how far they get, and the number goes back. Last, the rules solve the puzzle one cell or dot at a time.
  • Inside: Tetroid: a third film shows how a Tetroid is made. Tetrominoes are planted on an empty board, and the free cells grow into regions around them. Where a region could hold a second tetromino (drawn in teal), its cells are moved or its tetromino is swapped. Then cells move until deduction alone settles every region, and the film solves the puzzle pass by pass.
  • Inside: Pinwheel: a second film shows how a Pinwheel is made. Galaxies grow on an empty board, always a cell together with its mirror image. Then the computer looks for a second way to split the board around the centres, draws it in teal and cuts it away. Last, it tries to solve the puzzle by deduction alone, round by round, and gets stuck: that is what makes the puzzle hard.
  • Loop tutorial: six short steps on a 5×5 board teach the three ideas Loop needs. A 0 has no line on any side, so the 3s next to it have lines on their other three; every dot gets two lines or none; and the loop must not close early. Then you finish the loop on your own, with the Hint button at hand. It opens on your first visit to Loop and has its button on the home page.
  • Widescreen on tablets and phones on their side, and on desktop screens less than 1000 pixels tall: the board takes the full height of the screen, and the clock, the tools (in a grid, each with room for its name), the buttons and the puzzle types sit in a column on the left. The column folds into a narrow strip with the tools; hints and messages then show beside it. Small boards grow beyond their usual largest size. On a phone on its side the header bar hides (the logo button in the column brings it down), the column gets tighter with the tools in a grid, and the folded strip shows just their icons. Large desktop screens keep the standard layout. The settings switch between the layouts on any screen in landscape and move the column to the right, on each device; "Use game default" (the setting until you pick another) follows the game's default for your device, also when it changes.
  • Two fingers scroll a board that is larger than the screen, and pinch to zoom it, with the touch input "Always draw" (the default). One finger still draws.

Fixed

  • "More" menu in the widescreen layout: it lies over the board instead of partly hiding behind it.
  • "Creating puzzle…" no longer gets selected like text when you drag across the board while a new puzzle is being made.
  • Menu ticks: a solved daily, weekly or monthly puzzle gets its ✓ in the puzzle type menu right away, and a type solved 100 times in a row its ★, instead of only after reloading the page. A solve in another tab shows too, and the ✓ goes when a new period begins.

Version 0.8.0, October 11, 2026

The first version with a number of its own and this changelog. It lists what changed lately; Tetroid, Pinwheel, Sudoku with Calcudoku and Loop (early access) were all playable before.

New

  • Changelog on the About page.
  • Contact address on the About page, for questions, ideas and bugs.
  • Wrong marks a hint finds are framed in red and stay framed until you change them or close the hint with ✕. Undo brings them back.
  • Streaks across devices: a daily, weekly or monthly streak goes on from whichever signed-in device you solve on.
  • New daily puzzle: a daily, weekly or monthly puzzle still open when its period ends says that the new one is out, and its button opens it.

Changed

  • Loop hints name the next line before any cross. The crosses a line rests on are tinted, with a sentence on why they stay empty, so a hint moves the puzzle on instead of asking for crosses first.
  • Pinwheel hints name the next line before any cross.
  • Tetroid hints shade cells after trying a placement that fails, where they used to name cells that stay empty.
  • Hint texts show right below the play bar on wide screens, as wide as the board, so long ones read in full.
  • Solved specials: the daily, weekly or monthly puzzle of the current period stays solved once solved, also on your other devices, and cannot start over.

Fixed

  • Cells under a message in the top bar take clicks again.
  • The connection menu opens above messages, and says "No server" in a version without one.

Backup

Download everything this browser stores for Vibe Puzzles as a JSON file, or restore it from such a file. The file contains your player code, so keep it private.

File format (JSON Schema)

Privacy

Your games, stats and settings are stored only in this browser (local storage). There are no cookies, no tracking and no ads.

If you create a player on the server, it stores your player name, a hash of your random player code, your scores, the puzzles it issued to you and, for syncing between devices, your saves and settings. Nothing else.

The site is hosted on GitHub Pages; GitHub may log technical data such as your IP address when the page loads.

Licences

The app is built with these open source libraries:

  • svelte 5.57.2 · MIT
    Licence text of svelte 
    Copyright (c) 2016-2025 [Svelte Contributors](https://github.com/sveltejs/svelte/graphs/contributors)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  • @sveltejs/kit 3.0.1 · MIT
    Licence text of @sveltejs/kit 
    Copyright (c) 2020 [these people](https://github.com/sveltejs/kit/graphs/contributors)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  • devalue 5.9.4 · MIT
    Licence text of devalue 
    Copyright (c) 2018-19 [these people](https://github.com/rich-harris/devalue/graphs/contributors)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  • clsx 2.1.1 · MIT
    Licence text of clsx 
    MIT License

Copyright (c) Luke Edwards <luke.edwards05@gmail.com> (lukeed.com)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  • tailwindcss 4.3.3 · MIT
    Licence text of tailwindcss 
    MIT License

Copyright (c) Tailwind Labs, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
  • @fontsource/fredoka 5.3.0 · OFL-1.1
    Licence text of @fontsource/fredoka 
    Copyright 2016 The Fredoka Project Authors (https://github.com/hafontia/Fredoka-One)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.
  • @fontsource/cinzel 5.3.0 · OFL-1.1
    Licence text of @fontsource/cinzel 
    Copyright 2020 The Cinzel Project Authors (https://github.com/NDISCOVER/Cinzel)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.

3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.

4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.

5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.

TERMINATION
This license becomes null and void if any of the above conditions are
not met.

DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.

Tetroid follows the rules of LITS, Pinwheel those of Tentai Show (Galaxies), both classic puzzle types from Japan. Sudoku and its mode Calcudoku keep their usual rules.