LinkedIn 6x6 Sudoku #336: The Pro-Tips Guide to Cracking the Grid

LinkedIn 6x6 Sudoku #336: The Speed-Run Breakdown

Listen up. You're staring at LinkedIn Mini Sudoku #336, and the grid looks tight. Six rows, six columns, and six 2x3 shaded boxes. The numbers 1 through 6 must appear exactly once in every row, column, and box [1]. No guessing. Pure logic. If you're trying to clear this in under two minutes, you need to know where the grid is actually hiding its weakness.

The Setup: Reading the Clues

Let's scan the starting grid. You have a 5, 3, 2, 6 clustered in Row 2, and a 4, 2, 1, 3 anchoring Row 5. Row 5 is your best friend here. It's nearly complete with just two cells missing: the second and fifth columns. The numbers missing are 5 and 6. But look at Column 5; it already has a 4, 3, and 5. Wait, Column 5 has a 5 in Row 6. That means Row 5, Column 5 cannot be 5. It must be 6. That forces Row 5, Column 2 to be 5. Boom. Row 5 is solved: 4, 5, 2, 1, 6, 3. That's your first Hidden Single win [1].

Pro-Tips for the 6x6 Layout

In a standard 9x9, you scan for long rows. In a 6x6, the 2x3 boxes are the real power players [1]. Stop scanning columns and start Cross-Hatching through boxes. If a number, say '3', is in Row 1 and Row 2 of Box 1, it has to go in Row 3 of that box. This eliminates candidates faster than scanning a single row [1].

Use the Note feature aggressively. LinkedIn's Mini Sudoku lets you jot down possibilities [3]. Don't waste time mentally tracking '4' and '5' in every empty cell. Write them down. If you see a cell where only one number fits after checking its row, column, and box, that's a Single. Find it, fill it, and move on.

The Crucial Square: Row 3, Column 3

Here's where the game cracked open. You solved Row 5, which gave you a 5 in Column 2. Now look at Row 3, Column 3. The box containing this cell (Box 2) needs a 4. Rows 1 and 2 in that box already have clues that block the 4 from going elsewhere? No, let's look closer. The box needs a 4. Row 1 has a 4 in Column 5. Row 2 has no 4. Row 3 has no 4. But Column 3 has a 3 and 2. The missing numbers in Row 3 are 1, 4, 5. Column 3 has 3, 2, 2 (wait, Row 5 Col 3 is 2). So Column 3 has 3, 2. It needs 1, 4, 5. The box (Box 2) has 3, 2, 1 (Row 4 Col 2 is 1, but that's Box 1). Let's re-evaluate.

The real Crucial Square is Row 2, Column 2. You have 5, ?, 3, 2, ?, 6. Missing are 1 and 4. Column 2 has a 6, 2, 1, 3. Wait, Column 2 has a 1 in Row 4. So Row 2, Column 2 cannot be 1. It must be 4. That forces Row 2, Column 5 to be 1. With 5, 4, 3, 2, 1, 6 locked in Row 2, the entire top half of Box 2 is set. This placement unlocks the rest of Column 2 and Box 2 instantly.

How We Got the Final Answer

Once Row 2 and Row 5 are locked, the Cross-Hatch becomes obvious. Look at Column 5. It has 4, 1, 3, 2, 6. The only missing number is 5. So Row 3, Column 5 is 5. That completes Column 5. Now look at Row 3. It has 2, 5, 3. Missing 1, 4, 6. Box 2 needs a 4. Row 3 is the only spot in Box 2 for the 4 (Row 1 has 4 in Col 5, Row 2 has 4 in Col 2). So Row 3, Column 3 is 4. 6, 2, 4, 5, 3, 1 is Row 3. The grid collapses into place. The final answer is [[2,6,1,3,4,5],[5,4,3,2,1,6],[6,2,4,5,3,1],[3,1,5,6,2,4],[4,5,2,1,6,3],[1,3,6,4,5,2]].

Don't guess. Find the Hidden Singles in the nearly complete rows, use the Note feature to track blockers, and let the 2x3 boxes guide your cross-hatching. That's how you beat #336 fast [1][3].