LinkedIn 6x6 Sudoku #458 Speed-Run Guide

Pro-Tips for LinkedIn 6x6 Sudoku #458

This is a classic speed-run grid: the opening givens look generous, but the middle columns resist until the boxes start talking to one another. Treat each region as a pressure zone, not an isolated mini-puzzle.

Start with the High-Value Lines

The first row already contains 1, 2, 3, so its missing digits are 4, 5, 6. Cross-hatching through the upper-left and upper-right boxes quickly limits the leftmost blank to 6. That gives the row its first clean placement and establishes the top-line pattern:

6 1 2 3 5 4

Do not chase guesses here. The row is solved by combining box restrictions with column exclusions, which is faster and safer than scanning candidates one square at a time.

The Crucial Square

The key breakthrough sits in the second row, third column. After the first row is fixed, the upper-middle box and column three leave only 3 for this square. That hidden single forces the second row into a much narrower shape.

Once 3 lands, the second row resolves through ordinary elimination, producing:

4 5 3 1 2 6

This is the grid's pivotal moment. The completed second row removes 4, 1, and 2 from several lower candidates, turning what looked like a stalled center into a sequence of forced moves.

Cross-Hatching the Lower Half

Now work down the columns rather than restarting row by row. In the third row, the givens 1 and 5 combine with the solved upper rows to force 3, 4, 2, 6 into the remaining positions. The row becomes:

1 3 4 2 6 5

At this point, the fourth row is especially cooperative. Its existing 2 and 3, plus the newly completed columns, leave 6 in column two and 5 in column three. The remaining pair then settles immediately:

2 6 5 4 1 3

The Difficult Row

The fifth row is the one most likely to slow a fast solver. It begins with several open cells, but its final two positions are constrained by the lower-right box. Cross-hatching removes 2, 3, and 5 from the wrong columns, leaving the row as:

3 2 6 5 4 1

That row is not solved by a dramatic deduction. It is solved by disciplined candidate removal. In a 6x6 puzzle, every completed row has an outsized effect, so resist the urge to pencil in speculative pairs.

Finish with the Last Column

The final row is now nearly automatic. Column checks and the bottom boxes leave the missing digits in a single order:

5 4 1 6 3 2

Before stopping, verify each 2x3 box contains 1 through 6 exactly once. The completed grid is:

6 1 2 3 5 4
4 5 3 1 2 6
1 3 4 2 6 5
2 6 5 4 1 3
3 2 6 5 4 1
5 4 1 6 3 2

Speed-Run Takeaway

The clean route through #458 is top row, crucial square, center boxes, lower-row cleanup. Use cross-hatching to find where a digit can go, then use hidden singles to confirm the placement. The moment the upper-middle box yields its 3, the rest of the puzzle is controlled elimination rather than guesswork.