no, grammar errors are wavy underlined green
True
It basically means that whatever is underlined is written with bad grammar. Fix it!
A red wavy underline typically indicates a spelling error or typo, not necessarily a grammatical mistake. It suggests that there may be a misspelled word or an unrecognized term in the text.
"Geschreibt" is maybe the grammatically incorrect way of writing "geschrieben" which means written.
If 'I win you' means 'I beat you,' it's grammatically incorrect. If it means 'I win, and the prize is you,' then it's probably correct--although you might want to rephrase it as "If I win, the prize is you."
It is grammatically incorrect, but it means: "For my friends in Rock"
This usually means that the way you have been writing is grammatically incorrect.
"Tu estudiar" is grammatically incorrect in Spanish. The correct way to say "you study" in Spanish would be "tú estudias."
While the sentence is grammatically incorrect, I believe it means to say 'I'll hit when you're ready.'
In every composition program I've used, a red underline is indicative of a spelling error, whereas a green underline indicates a grammatical error. This has always been the case, in my experience, with Microsoft Word and Open Office Writer. If you suspect otherwise, it may be wise to check the help files associated with whatever program you're using, although you can probably find out by simply right-clicking the flagged text and examining the options in the resultant context menu.
The particles in this sentence are grammatically incorrect, rendering an accurate translation impossible.
If the puzzle is going for a pun, they may have tried the grammatically incorrect: a tempest (like attempt).