Index Cards
(Published on 3. September 2025, 13:12 by lmdemasi)
Normal sudoku rules apply.
Black dots separate cells where one digit is double the other. White dots separate cells where digits are consecutive. Not all dots (of either colour) are given.
The grid contains a set of index cards. If a digit D on an index card is in position P in its sudoku box, then there must be a digit P on the same index card that is in position D in its sudoku box.
Positions in a sudoku box are labelled 1 to 9 in standard reading order.
Play on Sudokupad
A 6x6 sample puzzle is available on Sudokupad
Play on Sudokupad
A 6x6 sample puzzle is available on Sudokupad
Black dots separate cells where one digit is double the other. White dots separate cells where digits are consecutive. Not all dots (of either colour) are given.
The grid contains a set of index cards. If a digit D on an index card is in position P in its sudoku box, then there must be a digit P on the same index card that is in position D in its sudoku box.
Positions in a sudoku box are labelled 1 to 9 in standard reading order.
Play on Sudokupad
A 6x6 sample puzzle is available on Sudokupad
Play on Sudokupad
A 6x6 sample puzzle is available on Sudokupad
Solution code: Row 7
Solved by MattYDdraig, Aaravos18, Simon Yuan, Lorena, DubiousMobius, Piff, SKORP17, Voidslime, Prof.Dori, ViKingPrime, Cryccu, Franjo, mackant1, yellow, abihummel, Scojo, Atticus837, zrbakhtiar
Comments
on 4. September 2025, 08:53 by ViKingPrime
Very nice title (and a great puzzle too!)
on 3. September 2025, 21:27 by Voidslime
Very fun and interesting variant! After the 6x6 practice the 9x9 was a very approachable 1* challenge
on 3. September 2025, 16:48 by DubiousMobius
Great visuals! I really enjoyed this take on indexing! Had to keep reminding myself to ignore card positions and think about boxes.
Thanks!
