The classic tetris scene has been crazy lately. Rolling (the name of the new strategy) allows players to easily play past the "kill"screen of level 29. Classic tetris matches are becoming endurance matches and we're seeing new records broken left and right of highest score and highest level in both PAL and NTSC versions. For Classic Tetris World Championships they're considering adding a second killscreen by editing the rom to limit the length of matches.
https://www.youtube.com/watch?v=9hcZ1tNwvlc https://www.youtube.com/watch?v=l2r0fIQ3RI4