HackerNews
Zip Trees data structure by Robert Tarjan [pdf](https://arxiv.org/abs/1806.06726)
Zip Trees data structure by Robert Tarjan [pdf](https://arxiv.org/abs/1806.06726)
HackerNews
Teenager beats Tetris game older than he is to become world champion [video](https://www.bbc.co.uk/newsround/45943854)
Teenager beats Tetris game older than he is to become world champion [video](https://www.bbc.co.uk/newsround/45943854)
www.bbc.co.uk
Teenager beats man at Tetris to become world champion - CBBC Newsround
Watch the tense moment a 16-year-old beat a seven-time Tetris champion.