LinkedIn Mini Sudoku

Choose one number, such as 4, and look for where it already appears. In each region missing that number, eliminate rows and columns that already contain a 4. Often only one cell remains. Repeat for digits 1 through 6. This crosshatching method finds placements that are easy to miss when you inspect empty cells one at a time.

Because the grid is compact, a placed number influences a large fraction of the board. After filling a digit in one region, immediately rescan the same digit across neighbouring regions. A single placement may remove the last candidate from another row or column. Digit-focused passes create natural chains and reduce the need to write many notes early.

A naked single is a cell with only one possible number after checking its row, column, and region. A hidden single is different: several numbers may fit the cell, but one particular digit has no other available location within that unit. Both are forced placements. Learning to search for hidden singles is the biggest step from casual filling to consistent Mini Sudoku solving.

When a line is nearly complete, list its missing numbers and test each empty cell against the crossing column and region. Do not rely on visual intuition alone; articulate why every other candidate is excluded. On a 6×6 board the candidate set is small enough to do mentally, but LinkedIn also provides a notes feature when several cells remain unresolved.

If two cells in the same row, column, or region can contain only the same two numbers, those values are locked into that pair. Other cells in the unit cannot use either number. The pair does not tell you the order yet, but its elimination effect may create a single elsewhere. This is often the bridge between straightforward opening placements and the final section of a harder board.

A related pattern occurs when all candidates for one digit within a region lie in a single row or column. That digit is locked to the line inside the region, so it can be removed from the rest of that line outside the region. These interactions are easier to see in Mini Sudoku than in a 9×9 grid and make excellent practice for full-size puzzles.

Candidate notes should reduce uncertainty, not cover every cell with six tiny numbers. Begin by scanning for direct placements. Add notes only when a cluster genuinely has several possibilities, and erase candidates after every confirmed number. Stale notes are a common source of mistakes because they preserve values that a later placement has already ruled out.

LinkedIn also offers hints, Auto-check, highlighting, Undo, and other familiar Sudoku assistance. If Auto-check reports a problem, undo the unsupported placement and reconstruct its candidates. Guessing one of two numbers may produce a fast time when lucky, but it teaches less and can create a chain of internally consistent-looking errors on the unlucky branch.

Use a stable loop: scan each digit across regions, finish rows or columns with few blanks, inspect hidden singles, then look for pairs. After every placement, return briefly to the affected row, column, and region. This is faster than restarting a random whole-board search and makes it less likely that a simple consequence remains unnoticed.

LinkedIn’s shared Mini Sudoku result can show solve time and whether mistakes or hints were used. The game is intended to fit in roughly a few minutes, but difficulty can increase through the week. Compare accuracy and reliance on notes before comparing raw speed. A new handcrafted puzzle appears at midnight Pacific Time, and the previous daily board expires.

If a late-week puzzle feels noticeably tougher, keep the same sequence instead of inventing a shortcut. Easy boards may finish through direct singles, while harder ones make better use of pairs and locked candidates. The technique changes in depth, not in principle. That consistency is one reason the six-number format works well as daily Sudoku practice: the feedback loop is short enough to notice exactly which deduction opened the grid.