Logic Masters Deutschland e.V.

This puzzle doesn’t have a link, feel free to skip my puzzle, it’s basically the same variant as this one.You won't miss anything.

The idea comes from RockyRoer’s puzzle.

1. Standard sudoku rules applies. Fill the grid with numbers from 1 to 9 so each digit occurs exactly once in every row, column and 3x3 box.
2. [Sandwich Counts]Digit in circled cells indicate the total number of cells sandwiched between the 1's and the 9's in the row and column where the circle is in.
   • If a cell is simultaneously in a row sandwich and column sandwich, it is counted twice.
   • All circles are given.

Sandwich without sum, i guess, might be a little easy for me to set. There’s a small chance i might do this with sum’s digit, but i think i spent average amount of time setting the previous one, combined might takes longer, with less structure to work with. Maybe separate position with different shape, but i don’t know whether counting overlapped digit once or twice, the tens digit might have a 1 difference, but the last digit may goes wild. Maybe i’ll do it someday later.

As for this variant, i’m just thinking about how to spam circle in the whole grid. Spoilers alert. The obvious aside, i need to diverse the counts in rows/columns. There’s only 7 count choice, and above 4 is very useless, especially in a combine count, it’ll easily go over 9. the problem with the same count is that there won’t be aligned circle, which is not what i want if i need to spam. As for the overlapped, the original puzzle only use it once, at the end. Since i know i don’t want a harder puzzle than that, i might as well try this without count twice, the outside clues will work, save me some pain in play testing. I can’t count. Also, i don’t know why, it really remind me of Kakurasu.