Rectangle Sums
(Published on 15. March 2026, 00:00 by FIT7Y)
Rules:
Place the digits 1-9 once each into every row, column, and box.
Within the grid there are rectangles. Only the upper left and bottom right corners of the rectangles are shown. Each shown corner corresponds to exactly one rectangle.
All digits contained within a rectangle sum to the total given in that rectangle's upper left corner.
Have fun solving!
Solution code: Row 5
Comments
on 22. April 2026, 00:13 by KMD
This was a great puzzle and a great feature.
on 18. April 2026, 16:00 by psams
I really enjoyed working this out. It was surprising to find the different ways to apply each sum to the cells inside or outside of each rectangle and in relation to the row, column, box totals. Very nice puzzle. Average to hard difficulty once you get the idea.
on 15. March 2026, 04:04 by RedBarchetta
3 hours - I just kept at it. Finding the pairings was not too difficult, quite fun, and deceived me into thinking it would go faster than it did. Nice puzzle! Whole lot of math and excel sheets to help with said math. Thanks!
