[title]

Weekly Sudoku Challenge

Week 27, 3 Sep 2025

Problem type:

Sujiken Sudoku (Medium to Hard)

Challenge Instructions

Rules

Malsar Weekly Sudoku Challenge is designed to help you built a daily sudoku habit
Step 1: Read the problem rules
Step 2: Problem can be solved by following options:

Option 1: Take printout/draw on paper, click download PDF

Option 2: Solve online (on the page Select Panel as "ON", Select Number and Normal)
Step 3: Solution will be provided next week

1. Sujiken (from Japanese "sujikai", literally "diagonal") is a variation of Sudoku, invented by George Heineman (USA). The puzzle consists of a triangular grid of cells containing digits from 1 to 9. The objective is to fill a grid with digits so that each cell contains a digit and no digit is repeated in any column, row and diagonal in any direction. Also, no digit occurs twice in any of the three larger 3 x 3 square regions and any of the three larger triangular regions enclosed by thick borders.

2. Submit your solution using source button on contest problem.