Note: The text editorials will be provided by the authors of the round. This video tutorial acts as an additional resource for those who prefer video over text, not as a substitute for the text editorial.

2006A — Iris and Game on the Tree

2006B — Iris and the Tree

2006C — Eri and Expanded Sets

2006D — Iris and Adjacent Products

2006E — Iris's Full Binary Tree

2006F — Dora's Paint