The azul sky out the windows puts on in the mind of a beach in Mexico. How many windows? Uno, dos, tres, quatro!

What time is it? Four-thirty. It's not late, no. No! It's early, early.

It’s a computer chip. Or a mockup of a computer chip. Transistors, traces, and so on.

The coloring is cosmetic. More or less.

Some people seem fixated on Inuit people having many words for snow, but English does too! From blizzard to whiteout, with flurries, graupel, and drifts, we have so many words. The one this puzzle’s palindrome lines make me think of is sleet.

It may seem like a lot of constraints, but it's a Samurai Sudoku, so you should only have deal with one or two at a time.

I regularly publish 9x9 Sudoku puzzles filled with 3x3 blocks of cells, but this one isn’t regular at all. It’s an Anti-Knight Irregular Sudoku!

Great American rock album, or the greatest American rock album of 2006?

It’s the corners that matter, so you can’t really cut them from the puzzle and expect good results.

Not a commentary on computer operating systems at all.