Arrows have been outclassed by bullets in terms of ranged weaponry, but how many digits fit on a bullet? Besides, I’m not sure efficiency should be a goal in weaponry of any kind. I’d prefer the opposite, in fact. Is there a less-efficient ranged weapon than marshmallows?
Between Lines are very logical. The cells physically between the circles have digits with values between the circle digits. Simple. Clear. Surely every puzzle with Between Lines is easy, right?
The challenges in creating these larger puzzles are multiple. I could have created more than four single-grid puzzles in less time than it took to create this one, in part because each change required me to re-solve the puzzle from the start, to be sure I hadn’t broken anything unexpectedly. Still, the satisfaction of a working gattai that also follows the rules I’ve set for myself, it’s worth spending the extra time on one out of every dozen puzzles or so.
I’ve pointed out before that Sudoku arrows don’t often point to anything, but in this case, quite a few arrows seem to be pointed at that center box in the grid. That could mean something.
What do arrows do? They point! Arrows in Sudoku puzzles don’t often point anywhere in particular, though. They just point out that some puzzles do require arithmetic skills, to wit: summing up a series of single digits to a single-digit total.
These arrows keep aiming for those quadruples, but missing. They’ve got the aim of Star Wars stormtroopers. Also, this is the 100th puzzle posted to this blog! (Internally, it’s puzzle 2630.)
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.
Just put one foot behind the other; 6, 7, spin, 8, 9, cross, wait, look out! They aren’t supposed to be difficult dance steps, but everybody has different strengths and weaknesses.
I know all the digits are facing the same direction, but just imagine that the puzzle rotates so the 75 is read right-to-left and the 74 is read bottom-to-top. Not at all related to Circuit, despite superficial similarities.
Just ignore the title as you solve the puzzle. It wouldn’t be fair to use the title as part of a logical deduction. You shouldn’t need it anyway.