Can anybody who attended regional round last year clarify about the format of puzzles? I was not able to attend last 2 TSC. The last time I attended (probably 2016), format was 8 6*6 puzzles in 1st round and 8 9*9 puzzles in 2nd round with 2 being variants (Diagonal and Odd-even). Was the format same last year too or did it change??