"Chain Sudoku," also known as "Strimko," is a logic puzzle that involves filling circles arranged in a square grid with digits. Some circles contain clues (pre-filled numbers), while others are empty and need to be filled by the solver. The grid also contains several chains, which are sets of connected circles.
- Digit Placement: Fill every empty circle with a digit from 1-6.
- Unique Digits: Each digit from 1-6 must appear exactly once in each row and column of the grid.
- Chain Rule: In addition to the rows and columns, each chain must also contain the digits 1-6 exactly once.
Basic Solving Tips
- Start with Clues: Begin by looking at the rows, columns, and chains that have the most clues. These will guide you to place digits in the empty circles.
- Avoid Repetition: Ensure that no digit is repeated in any row, column, or chain.
- Use Elimination: Identify which numbers cannot be in a particular circle and eliminate them as possibilities.
- Look for Certainties: Before placing a number, make sure it is the only possibility for that circle.
- Chain Consideration: Pay special attention to the chains, ensuring that the digits within them adhere to the rules.