Logic Masters Deutschland e.V.

2B or -2B

(Published on 13. July 2026, 10:40 by aqjhs)

A while ago it was Nell Gwyn's birthday! 🥳
And for the ocassion I got together with MathGuy_12 to make a balanced version of our complexdoku puzzle. Hope you like it!

  • This puzzle consists of two identically clued grids, one for the Real part and one for the Imaginary part.
  • Balanced Quattroquadri: On each grid place one digit from -4 to 4 in each cell so they don't repeat in any row, column or 3x3 box.
  • Anti-Pair: Cells in the same position between grids may not have the same digit.
  • Complexdoku: Both grids are considered as a single grid of complex numbers: A pair of corresponding cells in both grids is considered as a single complex number A+Bi where A is the digit in the real grid and B is the digit in the imaginary grid.
  • Ambiguous Complex Product Dots: The complex product of all cells touching a red star is equal to either 0+Ai or A+0i where A is the number on the dot. (The 40 clue only touches three cells.)

Note: The product of two complex numbers is

(A+Bi)(C+Di) = (AC-BD)+(AD+BC)i,

and the forms that yield a pure number are

C(A+Bi)(B+Ai) = 0 + C(A²+B²)i

and

C(A+Bi)(A-Bi) = C(A²+B²) + 0i

Online in Sudokupad

See also:

Solution code: Digits of the real part of row 2 followed by the digits of the imaginary part of row 2, both left to right and with - sign only for the negative digits.

Last changed on yesterday, 22:09

Solved by MathGuy_12, Zzzzz..., SnapDragon
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Comments

yesterday, 19:41 by aqjhs
puzzle fix (:
thanks SnapDragon for catching the mistake

on 13. July 2026, 17:51 by Zzzzz...
A huge test for my math skills.

Difficulty:5
Rating:N/A
Solved:3 times
Observed:3 times
ID:000SUV

Variant combination New Math knowledge Multi-grid puzzle Arithmetic puzzle

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