Logic Masters Deutschland e.V.

Focus on Symmetry

(Published on 4. October 2024, 10:26 by Mad-Tyas)

This puzzle is the result of an attempt to use modifier cells, which take position-dependent values, to create a puzzle with a completely symmetrical design.

Rules:

Sudoku: Fill every row, column and marked 3x3 box with the digits 1-9.

Focus Cells: There are nine Focus Cells in the grid, one in each row, column and marked 3x3 box. The Focus Cells must contain a complete set of the digits 1-9. The value of a Focus Cell is the sum of the row number and the column number of the cell. For example: If r4c8 is a Focus Cell it's value would be 12.

Region Sum Lines: On blue lines values must have an equal sum N within each 3x3 box it passes through. N may be different for different lines.

Have fun solving!

Sudoku on:
SudokuPad
F-Puzzles

Solution code: Row 9 (9 digits)

Last changed on on 12. October 2024, 21:37

Solved by Sonki, Snookerfan, Qodec, SKORP17, lianarox, Brodie2000, SincereEngineer, Azumagao, palpot, killer_rectangle, Krisonium, lmdemasi, Franjo, bansalsaab, Piff, brimmy, Vodakhan , hrhgln, Hazem-77, ... MapleAmber, Clara123, Isael, Blake Saligia, csq527, Tompzini, mahdiosm, thoughtbyte, Twan2797, Tomatenalat, galgamer, Mennoo_, johncj, zonka, h5663454, Sotehr, roflsalot, ViKingPrime, dennischen
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Comments

Last changed on 18. October 2024, 02:54

on 18. October 2024, 02:53 by ViKingPrime
@Franjo -- Pseudo Cells were created by SenatorGronk, however Marty took a shining to them and made quite a few puzzles with them, modifying the logic a bit as well, to fit his puzzles (Pseudo Cells originally mimicked the Box Number as their value)... I know it's unlikely Franjo will see this but the history lesson may be of interest for any future solvers who are curious!

on 12. October 2024, 21:37 by Mad-Tyas
"Modifier Cells" tag added

on 7. October 2024, 21:38 by johncj
I am so proud of myself that I managed to solve this great puzzle! Thank you.

on 5. October 2024, 15:57 by Franjo
Fantastic puzzle! Although the break-in was nice and quite easy the rest of the solve wasn’t at all. I would give 4,5 stars. By the way these Focus Cells are already known as Pseudo Cells. Named by Marty Sears to the best of my knowledge. Anyway, thank you so much for creating and sharing your masterpiece.

on 5. October 2024, 14:10 by lmdemasi
Loved the symmetry of the puzzle.

on 4. October 2024, 16:12 by Qodec
Wow what a puzzle.

on 4. October 2024, 13:40 by Snookerfan
Extremely well set puzzle, lovely ruleset, great fun, a bit harder than 3 stars for me. Thank you!

Difficulty:4
Rating:95 %
Solved:42 times
Observed:0 times
ID:000K4Q

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