Gauguin
org.piepmeyer.gauguin
Zapstore _@zapstore.dev Republished from GitHub / F-Droid by the Zapstore main account.
Gauguin is a Sudoku-like game where you solve grids via calculation and logic. You can use it to relax or to solve difficult grids to your opinion. In classic mode, you solve a 9x9 grid by typing a value from 1 to 9 in each cell such as - Each row and column contains each digit exactly once. - Each cage meets its given mathematical problem. E.g. a group of cells labeled with '5+' must be filled such that the sum of all digits is 5. Via game options, you may alter the game to solve other digits, smaller or greater grids, hiding the operators. **Slick and modern UI** - No switching of 'pencil mode' or such thing is needed: To set a value of a cell, just use short-tap to alter a possible value and long-tap for a known value. - Beta feature: 'Fast Finishing Mode' enables to fill cell with exactly one pencil mark rapidly. To be activated in the preferences. Feedback welcome, use the menu item 'Bugs and Features'. - Uses colors from the painting 'The Siesta' from Paul Gauguin (guess where the app's name comes from...) **Game options** - grid sizes: 3x3 to 11x11 with classic 9x9 - includes rectangular grids, e.g. 7x9 - operations (add, subtract, multiply, divide) - digits (1 to n, prime numbers, fibonacci sequence etc.) - difficulty (covering a incresing number of game variants) - usage of single cells - show or hide operators **Things still to be done** - small grids do not adjust to screen sizes properly, being shown way too huge - not all grid variants get calculated in a reasonable time (e.g. a 4x8 grid will likely need more time than your battery wants to give) - onboarding is missing a tutorial - various UI related optimization work - not all game variants have been supplied with difficulty ratings yet - calculation of next grid is not bullet proof in some rare circumstances
First release: Aug 31, 2025, 14 total releases.
Most recent release: Aug 30, 2026.
Appears in 1 app stack.
0 sats / 0 zaps received in the past year.
Sats Received
Underlying data available via MCP: app_zaps, app_releases.
Zap Count
Underlying data available via MCP: app_zaps, app_releases.
Releases
- Aug 30, 2026 0.52.1# Fixed * Fix size selection via slider being unusable on some devices. (reported by @JohannesWilde) * The next grid cache was not used in some circumstances.
- Aug 1, 2026 0.52.0# Changed * Enhance readability if a possible number which is already used as a value of a cell in the same row or column. The possible numbers now get a frame and should be visible, including large grids like 11x11. * Changes some core code to use coroutines more heavily. * Build against SDK 37, that is Android 17. * Debug variant only: Enhancements of the upcoming history based statistics feature.
- Jun 11, 2026 0.51.0# Added * Adds duodecimal numeral system, with base twelve: 0..9, A, B. (reported by @MrMobius)
- Mar 27, 2026 0.50.0# Changed * Split between a 'nishio solution' (using nishio or other probing techniques) and a general solution where one can fill all remaining cells via some simple logic. The further solution may be converted into an opt-in preference in the future. # Fixed * Fixes a crash at start up if the current save game file was corrupt. (reported by @HeikoxE) * Use multi line titles of preferences, avoids long titles to be cut of. (reported by @Mixaz017) * Initial pencil marks and filling single cases did not work if a game was restarted. (reported by @Mixaz017)
- Feb 28, 2026 0.49.1# Fixed * Fixes the feature "Nishio solution" to treat a solution as valid if it contains errors. (reported by @dansan984fit and @keiligch) * The preference dealing with broader cage frames does not change the inner cage drawing. (reported by @Cqoicebordel)
- Feb 24, 2026 0.49.0# Added * Added a new preference to draw broader grid cages, to enhance readability and accessibility. (Reported by @Cqoicebordel) # Changed * The display of cells whose possible values got changed by filling another cell changed from using a frame around these cells to using a slightly highlighted cell background. This should help to detect the grid cages without distraction. (Reported by @Cqoicebordel)
- Feb 7, 2026 0.48.3# Fixed * Fixed inconsistent Java version of toolchain to always use Java 21 to make F-Droid builds work again.
- # Fixed * Fixed inconsistent Java version of toolchain to always use Java 21 to make F-Droid builds work again.
- # Added * Adds challenges as new feature (available in debug variant only). Enables the user to play pre-calculated grids which are either very easy "zen" grids or the most hard grids which could be calculated, but still being solved via the upcoming Human Solver difficulty rating. # Changed * Changes internal game lifecycle logic. * Bump Java version of toolchain from 17 to 21 to make F-Droid builds work again.
- # Fixed * Version 0.48.0 APK was not in sync with git, so here comes version 0.48.1
- # Added * Add a preview when choosing numbers in new game dialog. * Detect if all remaining unfilled cells contain exactly one possible number and show a button to solve the grid if the given values are correct. * The upcoming Human difficulty algorithm now detects a simple variant of nishio (that is solving by propagating possible values) when calculating the difficulty of a grid. Currently only available in debug builds. # Fixed
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* Removes unwanted calculation of the upcoming Human Solver when calculating a new grid. - # Added * All diagrams of the statistic screen now feature maximizing them to a full screen view. # Changed * Various optimizations of layout of main screen. * Upcoming difficulty algorithm got performance speed ups. # Fixed
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* The main screen on large displays may not show all cells of the current grid. * Loading state aka Ferris wheel animation was distorted at small sizes and has been fixed. * Loading state aka Ferris wheel animation has been optimized for large size displays. * The preview in new grid screen gets calculated faster. * Version number in menu was missing. - # Added - Adds a confirmation dialog if a user requests help by e.g. revealing cells. This should avoid an unwanted reset of the current streak. The dialog only gets shown if the action would actually break a streak. (reported by @Mixaz017) # Fixed - Fixes statistics screen for >999 games played: Avoids unwanted line breaks by using auto size texts. This optimizes screen layout for small devices like old phones. (reported by @Mixaz017)
- — Fixes calculation of streaks in statistics. (Reported per mail) — The screen is kept on only if the current grid has not already been solved. (Reported by @rasher) — Enhances the readability of the math displayed in each grid cage. (Reported by @UnaTried)