1. "The Walls of the Universe" by Paul Melko. A device lets someone travel between parallel universes and things are not as expected. The only quibble I have with this one is that the device is described as having dials, levers, and buttons, and when the protagonist gets into trouble, he only tests one button. Excellent story otherwise.
2. "Home Movies" by Mary Rosenblum. I'm not sure I've ever disliked a story by Rosenblum. This one is about a technique that puts nanodevices in someone's head, they attend the gathering the client can't get to, and then the nanomemories are decanted to the client. I saw the end coming, but it was still very suspenseful.
3. "The Age of Ice" by Liz Williams. In the very far future, a spy tries to find information on a rumored weapon in a ruined library.
4. "Not Worth a Cent" by R. Neube. What happens when lots of people live to be too old? How do you survive when the government no longer provides services. This was funny as well as thought-provoking.
No mention of Sudoku in here, other than the answer from the puzzle in March's issue. Maybe I wasn't the only one who thought it was silly.