The numbers we've used for tiles run from left to right, row by row. So if the level's a 3x3 grid, the top row is 1-3, the second row is 4-6, and the final row is 7-9. For a 2x2 grid, the top row is 1-2, the bottom row is 3-4. Simple.
If you find this guide useful, let us know in the comments section and we'll expand on this walkthrough as we make our way through the game.
Harmony iPhone & iPad Walkthrough: Level 1
Tile 1 > Tile 3
Tile 2 > Tile 4
Harmony iPhone & iPad Walkthrough: Level 2
Tile 1 > Tile 2
Tile 3 > Tile 4
Harmony iPhone & iPad Walkthrough: Level 3
Tile 3 > Tile 6
Tile 8 > Tile 9
Tile 4 > Tile 7
Tile 5 > Tile 8
Tile 1 > Tile 2
Harmony iPhone & iPad Walkthrough: Level 4
Tile 1 > Tile 7
Tile 4 > Tile 5
Tile 5 > Tile 8
Tile 6 > Tile 9
Tile 2 > Tile 3
Harmony iPhone & iPad Walkthrough: Level 5
Tile 4 > Tile 6
Tile 7 > Tile 9
Tile 3 > Tile 6
Tile 4 > Tile 7
Tile 5 > Tile 8
Tile 1 > Tile 2
Harmony iPhone & iPad Walkthrough: Level 6
Tile 1 > Tile 3
Tile 1 > Tile 2
Tile 5 > Tile 8
Tile 4 > Tile 6
Tile 7 > Tile 9
Harmony iPhone & iPad Walkthrough: Level 7
Tile 7 > Tile 8
Tile 1 > Tile 7
Tile 2 > Tile 3
Tile 4 > Tile 5
Tile 6 > Tile 9
Harmony iPhone & iPad Walkthrough: Level 8
Tile 1 > Tile 7
Tile 2 > Tile 3
Tile 8 > Tile 9
Tile 4 > Tile 5
Tile 6 > Tile 9
Harmony iPhone & iPad Walkthrough: Level 9
Tile 1 > Tile 4
Tile 2 > Tile 3
Tile 6 > Tile 9
Tile 5 > Tile 6
Tile 7 > Tile 8
Harmony iPhone & iPad Walkthrough: Level 10
Tile 1 > Tile 3
Tile 4 > Tile 7
Tile 2 > Tile 8
Tile 3 > Tile 9
Tile 1 > Tile 3
Tile 5 > Tile 6