yeah I would recommend this. I usually take my tests wide awake with plenty of sleep and I have usually been up for at least 2 hours. I don't wanna mess up and take the test next week still half asleep.
The games can be portrayed infinitely... but the tools for solving them are a few... however, you need to apply them in a wide variety of situations. Even then, you won't exhaust all renditions of the various game types in 5 sets.