Expert Sudoku
Expert puzzles are the hardest tier on Kodiak Sudoku. They come straight from the source collection with no extra givens added, so the grids are sparse, usually in the mid-20s.
Expect long stretches where nothing is obvious. Most digits still fall to singles, but getting to them can take an x-wing or a swordfish.
What to expect
- Sparse grids, usually in the mid-20s for givens.
- Complete, accurate notes are essential.
- Fish patterns (x-wing, swordfish) show up when everything else runs dry.
Techniques you'll use
Tips
- Fill in every candidate before you start hunting for patterns.
- Search for fish one digit at a time.
- Try a solve without hints: the daily leaderboard shows how many hints each player used.
FAQ
What techniques do expert sudoku puzzles need?
Everything up to pairs, and sometimes x-wings or swordfish. Many expert puzzles still fall to careful singles and intersections.
How many givens does an expert sudoku have?
Ours usually have in the mid-20s. The mathematical minimum for a unique solution is 17.