Hard mode is for experienced solvers who want a serious logic challenge. With only 6-8 starting clues, you'll need advanced deduction techniques and careful tracking of possibilities. Hard puzzles often require multiple passes through the grid, ruling out invalid placements before finding the solution. Expect solve times of 5-10+ minutes even for skilled players. If you consistently finish the Daily puzzle quickly, hard mode will push your limits and help you develop deeper pattern recognition skills.