This Masyu is difficult for a 8×8, I think. I’ve had lots of time to make puzzles recently.
This Masyu is stolen from my AoPS blog, so the format looks somewhat different (bigger circles, no border). Posted to showcase a technique.
This Masyu has a pretty funny breakin, I think.
EDIT: Multi solutions fixed.
I mentioned I would return to other puzzle types, right? This is a Slitherlink, intended partially as a hint to that last Masyu. It can be understood with a trick that is also used in Puzzle #25. This Slitherlink making thing hasn’t been perfected, hence the uncentered numbers.
Puzzle #25 on the 25th? Clearly it should be a 25×25. This puzzle was inspired by a 15×15 I investigated/discovered/created a long while back for a yet-to-be-finished iOS app. Except this is harder. Using a math competition analogy, if the last couple puzzles were ‘AMC’-like, and the harder puzzles here are ‘AIME’ level, this is an Olympiad puzzle. Meant to be investigated, possibly with a dose of if-then, but once the theme is understood it should be doable? That’s the hope, anyway. (The hope is also that I’m right about this being hard. :P) On an unrelated note, I put as much time into this puzzle as I did into all other September puzzles combined. After this, I hope to return to other puzzle types besides Masyu.
A hopefully easy Masyu as I possibly make a return to puzzle posting.
Here’s another Masyu puzzle. One or two observations will practically eliminate if-then logic.