Hard Difficulty

Starting Clues: About 30

For practicing intermediate techniques in real puzzles.

Hard difficulty requires techniques like Pairs, Triples, and X-Wing. Managing candidates becomes the key to solving.

You'll need to spot patterns that cross multiple units, so a broad view and consistently updated candidates matter.

• Narrow down candidates with Naked/Hidden Pairs.
• Look for X-Wing patterns spanning two lines.

▶ Start at This Difficulty