Normal Sudoku rules apply.
The square of a digit (N^2) in a cell with arrows, is equal to the sum of the cells indicated by the arrows.
If the arrow cell digit is less than all digits it points to, it's always marked with the < symbol.
Solution code: Row 8, 9
on 8. August 2020, 06:31 by Big Tiger
"The square of a digit (N^2) in a cell with arrows, is equal to the sum of the cells indicated by the arrows."
The sum of ALL the cells? Is R2C2-squared equal to R1C2 + R2C3:9 + R3:9C2 + all the cells on the down-right diagonal?
Edit: @BigTiger no, just the cells indicated by the arrows. R2C2 squared is equal to R1C2, R2C3, R3C3 and R3C2.
*** Ah, okay, so in the example of R2C2, the four cells touching R2C2 as indicated by the arrows will add up to the square of R2C2 itself. Got it.
on 7. August 2020, 18:35 by stephane.bura
Great construction and demonstration of the breadth of this design space.
More! :)
on 7. August 2020, 16:49 by SenatorGronk
Is the less than clue a negative constraint?
Edit: @SenatorGronk yes :)