POW 2022-20 is still open. Anyone who first submits a correct solution will get the full credit.

POW will resume on Oct. 28.

POW 2022-10 is still open. Anyone who first submits a correct solution will get the full credit.

POW 2022-02 is still open. Anyone who first submits a correct solution will get the full credit.

This semester, the rule is changed so that the solutions are due next Friday at 3PM, i.e., exactly a week after the post of the problem.

POW 2021-19 is still open. Anyone who first submits a correct solution will get the full credit.

POW 2021-17 and 2021-18 are still open. For each problem, anyone who first submits a correct solution will get the full credit.

POW 2021-16 remains open, as we found gaps in the submitted solutions. Anyone who first submits a correct solution will get the full credit.

POW 2021-14 is still open and anyone who first submits a correct solution will get the full credit.

Please check that POW 2021-14 is slightly changed; there is an additional assumption that \( X \times Y \) is Hausdorff.