For several years I have used Opera on my Android tablets to play the Guardian cryptic crosswords. Opera is the only browser that renders the crosswords properly. The big issue is that other browsers (Chrome, Firefox, etc) will enter all letters in a single box. With Opera, after entering a single letter, the cursor would automatically advance to the next cell. However, the latest update has destroyed that functionality. Now all letters enter in a single cell just like all other browsers.

Opera is OK but for an Android user nothing can beat Chrome. Chrome is fully integrated and it automatically syncs with Google Search and Google Maps and across all platforms including Desktop/Laptop. Opera browser cannot even get its own "Opera Link" to function. So other than the functionality with these puzzles, Opera had nothing. Now it doesn't even have that.

An example of the Guardian puzzle can be found here: http://www.theguardian.com/crosswords/cryptic/26482