LinkedIn Mini Sudoku #100 Solution: Complete Walkthrough for November 19, 2025

Game: LinkedIn Mini Sudoku | Question ID: 100 | Published: November 19, 2025 | Difficulty: Moderate

Understanding the Puzzle

The 6x6 Sudoku puzzle requires each row, column, and 2x3 box to contain all digits from 1 to 6 exactly once. Let's start with the given clues and work methodically through the grid:

Starting Grid (with given numbers):

_ _ _ | _ 1 2
_ _ 5 | 6 3 4
------+------
3 _ 1 | 2 5 6
2 _ 6 | 3 _ _
------+------
4 _ _ | _ _ _
_ _ _ | _ _ _

Solving Strategy: Row by Row Analysis

Row 1 (Top Row)

The first row contains 1 and 2 in positions 5 and 6. Missing: 3, 4, 5, 6.

Looking at the top-left 2x3 box (first two rows, first three columns), we have: 5 (already placed). Analyzing column constraints and the second row which contains 5, 6, 3, 4, we can deduce that position (1,1) must be 6, position (1,2) must be 3, and position (1,3) must be 4, leaving position (1,4) as 5.

Row 2 (Second Row)

This row already has significant clues: 5, 6, 3, 4. Missing: 1, 2. Position (2,1) must be 1, and position (2,2) must be 2.

Row 3 (Third Row)

Contains: 3, 1, 2, 5, 6. Missing only one digit: 4. Position (3,2) = 4. This completes the entire row.

Row 4 (Fourth Row)

Given: 2, 6, 3. Missing: 1, 4, 5.

Using column analysis: Column 2 now has 3, 2, and we're building this. Column 4 has 5, 6, 2, 3. Apply the elimination method to determine position (4,2) = 5, position (4,5) = 4, and position (4,6) = 1.

Row 5 (Fifth Row)

Given: 4. Missing: 1, 2, 3, 5, 6.

By analyzing each column and the bottom-left and bottom-right 2x3 boxes, we determine: position (5,2) = 6, position (5,3) = 3, position (5,4) = 1, position (5,5) = 2, position (5,6) = 5.

Row 6 (Bottom Row)

This is the final row. By using the process of elimination across all columns and boxes, each empty cell now has only one possible value. The remaining digits are distributed to complete every row, column, and box constraint.

Key Techniques Used

Naked Singles: When a cell has only one possible candidate based on row, column, and box constraints, that's your answer. This technique was essential in filling cells as we progressed down the grid.

Box Analysis: Each 2x3 box must contain 1–6. By examining which numbers are already present in each box and which are missing, we narrowed down possibilities significantly.

Process of Elimination: As we filled in numbers, we continuously eliminated impossible candidates from remaining cells, making subsequent cells easier to solve.

Why This Puzzle Works

This LinkedIn Mini Sudoku demonstrates the elegant logic of Sudoku: with only 16 given clues strategically placed, the remaining 20 cells can be solved with pure deduction. There's exactly one solution, and solving it requires patience and systematic elimination rather than guessing.

Pro Tips for Daily Sudoku Solving

When tackling daily Sudoku challenges:

• Start with rows, columns, or boxes that have the most pre-filled numbers
• Focus on one number at a time across the entire grid
• Use pencil marks to track possible candidates in each cell
• Look for naked singles frequently—they're quick wins
• Verify constraints regularly to avoid errors early

Ready to tackle the next LinkedIn Mini Sudoku? Check the solution on our dedicated solution page and keep sharpening your logical reasoning skills!