Quantum arrows
(Published on 24. October 2026, 21:04 by Monty)
Normal sudoku rules apply. Each red line is an arrow i.e., the digit in one of its circles must equal the sum of all the other digits along the line, including the digit in the opposite circle. You must determine which endpoint is the sum for each arrow. For example, both r1c8=3, r2c8=6, r1c9=9 and r1c8=9, r2c8=6, r1c9=3 are valid configurations. The two arrows crossing diagonally in r3c3 are separate arrows, and the digit in r3c3 contributes to both sums.
Good luck!!
Solution code: Provide the digits of the 5th row from left to right as a string of 9 numbers eg. 123456789
Solved by jalebc, sparticle999, SKORP17, sedici, AKernel, PippoForte
Comments
on 24. October 2026, 23:13 by sparticle999
This is very well constructed. I like the initial elegant steps
