Your First Puzzle

Let's solve a puzzle together, step by step. Start an Easy puzzle and follow along.

Step 1: Scan the Grid

Before placing any numbers, take a moment to scan the entire grid. Look for:

  • Rows, columns, or boxes that are nearly complete
  • Numbers that appear frequently (making them easier to place)
  • Obvious singles where only one number can fit

Step 2: Find Easy Wins

Look for cells where only one number is possible. Common scenarios:

Nearly complete units — If a row has 8 numbers filled in, the 9th cell must contain the missing number.

Intersection logic — Sometimes a cell is restricted by its row, column, AND box so heavily that only one possibility remains.

Step 3: Use the Number Pad

When you find a number to place:

  1. Click or tap the empty cell
  2. Press the number on your keyboard, or use the on-screen number pad
  3. The number appears in blue, indicating you placed it

Step 4: Try Notes Mode

When you're unsure, use notes (also called pencil marks):

  1. Press N to toggle notes mode
  2. Click a cell and enter possible candidates
  3. Small numbers appear in the cell corners
  4. Press N again to return to normal mode

Step 5: Work Systematically

Don't jump around randomly. Try one of these approaches:

Number by number — Focus on placing all the 1s, then all the 2s, etc.

Area by area — Complete one box, then move to adjacent boxes.

Scan and repeat — Scan rows, then columns, then boxes, then repeat.

Common Beginner Mistakes

  • Rushing — Take your time. Speed comes with practice.
  • Ignoring notes — Use them liberally; they prevent mistakes.
  • Tunnel vision — If you're stuck on one area, look elsewhere.

You're Ready!

With these basics, you can solve Easy and many Medium puzzles. As you practice, patterns will become automatic, and you'll naturally develop your own solving rhythm.

Next, learn about The Interface to make the most of the tools available.