Logic Masters Deutschland e.V.

Inspired by the RAT RUN Series

As a non-native speaker, the rules are translated to English with the assistance of AI tools. Please let me know if any ambiguity occurs.

• Normal Sudoku: Place the digits 1-9 in each row, column, and 3x3 box.
• Racing: The Hare and the Tortoise must separately find a path to reach the chequered flag. A path is an unbranched line that passes through the centers of cells orthogonally or diagnolly. Paths cannot cross each other or themselves. All the cells cannot be visited more than once, apart from the flag where the two paths end.
• Path: A path simultaneously serves as a Dutch Whisper Line and a 3-Moduler Line. That is, any two digits adjacent on a line must differ by at least 4, AND, any three adjacent digits along a line have different residues modulo 3.
• Coins: Both the Tortoise and the Hare must collect at least one coin before finally reaching the flag.
• Hare: The Hare found somewhere to have a sleep before finishing the race. The path of the Hare must pass the cell with a ZZZ mark.
• Kropki Pairs: Digits separated by a black dot are in a 1:2 ratio. ALL possible black dots that are NOT PASSED THROUGH BY EITHER PATH are given.

Below are a 6x6 example puzzle and its solution. For this smaller grid, the minimum adjacent-digit difference on paths is reduced from 4 to 2, while retaining all other rules.

CtC Link to the example puzzle

CtC Link to the main puzzle (Some systems or browsers may not display the emojis correctly and there is no way I can solve that. If it occurs, kindly check the reference image below.)