Dominosa help

Dominosa is a logic puzzle with simple rules and challenging solutions.

The rules of Dominosa are simple.
You have to find the location of all dominoes on the grid. A domino is a pair of numbers. You can have only one of each pair.
Are you lost? Check out the step by step tutorial

Tap/click to place a domino while in this mode (default)
| This button switches to "borders" mode - you can place a red border between numbers which you are certain cannot belong to the same domino.
These 2 buttons allow you to color a certain number (red or blue). Just tap/click on a number while in this mode to color all its occurances.

Zooming
Pinch with two fingers to zoom in/out. If you use a mouse you can use the scroll button.

Moving
Pinch with two fingers and drag to move the puzzle. If you use a mouse you can click and drag with the middle (scroll) button.

Game modes and sizes

  • You can change the game you play from the "hamburger" menu at the top-right corner.
  • You can change the mode / size of the current game from the top menu (click on the down arrow at the top/middle)
  • There are 2 modes which you can play
    • Random - this mode loads a random puzzle from the chosen size
    • Quest - this mode requires you to login. You can then solve a sequence of puzzles with increasing difficulty.

Other helpful tips

  • You can get rid of the address bar and gain extra playing space by dragging the header or the footer quickly upwards so you scroll the page a bit down. It's tricky and you need practice. iOS8+ users - this will be just temporary until you click something in the bottom bar - sad story I know.
  • If you are left handed or just playing with your left hand there is a spacial option in the settings just for you.
  • Try the different helpers in the settings - some will make the puzzle too easy for you, others may automate some trivial tasks.