Entropic Line: Any set of three adjacent cells along an entropic line must contain a low digit (123), a middle digit (456), and a high digit (789). The outer heart in this puzzle is an Entropic Line.
Renban line: Digits along a Renban line must form a set of non-repeating consecutive digits in some order. The middle heart in this puzzle is made up of two Renban lines.
Parity line: Digits along a parity line alternate odd/even. The inner heart in this puzzle is a parity line.
Consecutive Pairs: Digits in cells separated by a white dot are consecutive.
Try the puzzle on the SudokuPad app by Sven Neumann.
Solution code: Row 7, left to right, 9 digits no spaces
yesterday, 05:27 by SirRanch
Challenging but not infuriating. Good puzzle and lovely graphic. Thanks!!
on 15. February 2026, 01:27 by ebulku
31:14
on 14. February 2026, 22:13 by SpriteCritter
29:54 for me and I thought this was a great puzzle!
>>Thank you!
on 14. February 2026, 21:40 by BlueToast001
32:34 for me. Enjoyed this very much!
>> Thank you!
on 14. February 2026, 10:57 by JoeyJoeJoe
00:56:18 for me.