LinkedIn Mini Sudoku #104 (I Know Y) - November 23, 2025: Step-by-Step 6x6 Solution Guide

Welcome to the solution walkthrough for the LinkedIn Mini Sudoku puzzle #104, titled I Know Y, published on November 23, 2025. This 6x6 Sudoku challenge requires placing digits 1 through 6 so each row, column, and 2x3 box contains all numbers exactly once. Let’s dig into the logical steps taken to fill in this puzzle accurately.

Starting Point: We begin with the given clues:

• Row 2 has a 5 in the first column and a 1 in the last column.
• Row 3 has a 3 in the second column and a 2 in the fifth column.
• Row 4 has a 1 in the third column and a 4 in the fourth column.
• Row 5 has a 2 and 5 in the third and fourth columns respectively.
• Row 6 has a 3 and 6 in the third and fourth columns respectively.

Step 1: Examine Rows, Columns, and Boxes with Most Clues

Starting with Row 2, which has two clues (5 and 1), identify missing numbers: 2, 3, 4, 6. Checking columns and the 2x3 boxes helps eliminate some options:

• In the first 2x3 box (top-left), 5 is present; check which numbers must fill the remaining cells.
• Look at columns intersecting Row 2 to avoid duplicates of numbers already placed.

Step 2: Use the Process of Elimination for Each Cell

For some empty cells, only a single number fits due to presence of others in corresponding row, column, or box. For example:

• In Row 3, Column 3, since 1 is in Row 4, Column 3 and 2 in Row 3, Column 5, look at box and column to see that only a 5 fits here.
• Use similar logic in Row 4 and Row 5 to deduce which numbers fit in the partially filled middle columns.

Step 3: Fill Rows Based on Remaining Numbers

Fill in digits for each row by considering which digits are missing and could fit without duplication. For example:

• Row 1 is completely empty, but using the digits missing from columns and boxes, narrow down cell values.
• Row 6 already contains 3 and 6; look for digits 1, 2, 4, 5 to place.

Step 4: Confirm Column Constraints

Cross-check columns to ensure no duplication occurs as numbers fill in. This process can highlight which numbers must fit in certain empty cells with only one possibility.

Step 5: Complete Boxes Using Exhaustive Check

Each 2x3 box must contain 1 through 6 exactly once. Using the numbers already placed, fill missing digits by exclusion within each box.

Step 6: Final Deductions Using Naked Singles and Last Remaining Spots

When a cell has only one possible number left, place it confidently. Similarly, a number that can only fit in one cell within a row, column, or box should be placed accordingly.

Example: In the bottom-left box, with digits 1, 5, and 6 placed elsewhere in related rows/columns, the missing number 4 can only fit in one cell.

Following these logical steps carefully leads to the complete solution without guessing. Deductive reasoning through checking rows, columns, and boxes iteratively unlocks each cell’s value systematically.

This solution guide to LinkedIn Mini Sudoku #104 emphasizes strategic elimination and cross-referencing which is key to solving 6x6 Sudoku effectively. Practice this logical approach to build your Sudoku skills steadily.