With the largest digit in the bottom right corner, these are also known as Young Tableaux. I’ve added an indicator arrow both as a reminder of the Young Tableaux constraint, and as a hint that future Gravity Cages might not always have the arrow point in that direction.

In testing, this puzzle provoked some debate. This grid can seem quite complicated, but those “renban arrows” are far more limiting than they might first appear.

Not a Sudoku-X puzzle, since only the “positive” diagonal is marked. Still, the unmarked diagonal is interesting. And not just on a global scale!

The shapes look a bit like Oklahoma if you’re generous, and because people who illegally rushed in to claim land ahead of the official opening of the legal theft of Oklahoma land in 1889 were labeled “Sooners,” a name the University of Oklahoma adopted for all future sports teams in 1908. I spend all my creativity on the puzzles, leaving nothing for the names.

The world is full of things to measure, and scales for reporting those measurements. Some are more rational than others, some are more human-oriented than others, and some are older than others, but none of them involve thermometers that sometimes rise and sometimes don’t. This puzzle does, though!

Continued research into the issue of Anti-Quadruples has exposed why we had not seen them before. They are best detected not by observing them directly, but by observing what isn’t there.

Testing hypothesis: For every constraint, there is an equal and opposite anti-constraint. Research into quadruples has turned up anti-quadruples in far greater quantities than theory suggested. Further research will be required.

There’s really no point in having two fully-populated quadruples clues in a box. They only touch seven cells between them, so giving you four digits is overkill.

There are eight L shapes in this puzzle. No, I didn’t forget the green ones: two of the peach ones aren’t L-shaped. There are ten lines bent into right angles, but two are bent in a different direction from the others. And I don’t care what anyone says, it’s not an L if the horizontal bit is longer than the vertical bit!

I know how I solve this puzzle, but it’s fun wondering how others will. Top to bottom? Left to Right? Odd-numbered boxes first? Alphabetically? Any order that leads to the fully-zipped puzzle is great.