Yes I was sure.. In fact I've learned the word "jetlag" there is 2 weeks ago.. I think to try a maximum number of tetris is very good for everybody.. I can get 80% of my ability with 15min of gaming with all tetris.. And 3 hours to be 100% operational.. In fact my problem with recover on tgm2 was not very long..
Sorry, too long Japanese writing about DTET Rotation System. Eng"r"ish translation @ A case of anticlockwise 1. If cannot rotate, move one space to the left. 2. If cannot, move one space to the right. 3. If cannot, move one space to the down. 4. If cannot, move one space to the down & move one space to the left. 5. If cannot, move one space to the down & move one space to the right. @ A case of clockwise 1. If cannot rotate, move one space to the right. 2. If cannot, move one space to the left. 3. If cannot, move one space to the down. 4. If cannot, move one space to the down & move one space to the right. 5. If cannot, move one space to the down & move one space to the left. If push anticlockwise button while pushing clockwise button, clockwize-like anticlockwise rotate. If push clockwise button while pushing anticlockwise button, anticlockwize-like clockwise rotate. This system works flip rotate too.
Keep in mind there is a bit more to DTET... It has a somewhat sophisticated ARE-cancelling system I don't quite understand.