How many questions ?       (max. 50)

Difficulty level ?    easy- 3 tries,
- first and last letter shown,
- number of letters shown    intermediate- 2 tries,
- first letter shown    difficult- only 1 try,
- no letter shown

Answer delay ?    15 sec. 30 sec. 45 sec. 1 min. (default) 1 min. 15 sec. 1 min. 30 sec. 1 min. 45 sec. 2 min. 2 min. 15 sec. 2 min. 30 sec. 2 min. 45 sec. 3 min.