Lennard Sprong

Setting `overflow="hidden"` on every `use` element works.

For the Windows 8/10 versions, I've already written this behaviour for [Palisade](http://puzzles.codeplex.com/SourceControl/latest#palisade.c) and [Singles](http://puzzles.codeplex.com/SourceControl/latest#singles.c). Save files are fully compatible with other versions. I'm currently unable to compile the Android version...

The OneTimeProductNotification is documented here: https://developer.android.com/google/play/billing/integrate#pending https://developer.android.com/google/play/billing/rtdn-reference#one-time

Here's some information for conversion of the current genres on [pzprxs](https://pzprxs.vercel.app/), and how complex it is to implement: ### Exact copies: * canal -> nurikabe * oneroom -> heyawake ###...

Bag: Add switch for LR Buttons/One Button mode.

Compass: An area with multiple clues currently gives the confusing message "A block has multiple numbers.". `compass.js` does have different error messages, but doesn't actually use them.

> * with guarded autocheck, the button is a faint red "Incomplete" while the checker fails in the autocheck guard, and behaves like unguarded autocheck when the completeness check passes...

I fully agree on the input being tedious, but changing the answer visuals would go against how it's solved everywhere else.

There are probably hundreds of Sudoku variants out there, and there are other tools which specialize in Sudoku variants, such as F-Puzzles and Cracking The Cryptic's web app. I'm inclined...

Chrome 79.0.3945.79 macOS 10.15.2 Changing the font actually toggles between two different serif fonts. This is with the default browser settings. Edit: pzv.jp does apply the sans-serif font properly.