Modular Knights
(Published on 6. May 2022, 07:35 by jcgodart)
Rules:
- Normal sudoku rules apply.
- Digits a chess knight's move apart must be different.
- Modular lines: every set of three sequential digits along a line must contain a complete set of residues modulo 3, i.e. one digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}.
- Digits along lines may repeat if allowed by other rules.
- Cells with a grey circle must contain odd digits.
- Digits joined by a black dot must be in the 1:2 ratio.
- Digits joined by a white dot must be consecutive.
- Not all dots are given.
Play online using CTC App ("test" version with letters) or F-Puzzles
Solution code: Row 9 followed by Column 9 (left to right, top to bottom, 18 digits without spaces)
Solved by PippoForte, AvonD, SKORP17, Julianl, peterkp, avahales, ParaNox, monk, mausi19la03, jguer, lerroyy, apendleton, derKrampus, Dermerlin, Banana, ghosting, boriss, KatiBru, Just me, zhergan, jalebc, humaLautema, Koba, annnz, Kallor, cbrown92, MysticMan, tgstar
