On the Subject of Cruello

Easy as...
...it’s not easy.

This module consists of a 6×6 grid of buttons, each labelled with a number from 0–9.

Each of the twelve screens display a number, the sums of the digits in the corresponding rows and columns must be equal to the displayed number.

On top of this, the colour of each display indicates how many buttons of each colour there must be in its corresponding row/column:

  • If the display is white, there are two buttons of each colour in that row/column.
  • Otherwise, the colour of the display is the dominant colour in that row/column.

Pressing a button will toggle it between each of its three states. Each state has a digit that is distinct from the other two states.
Initially, every button is in the magenta state.

Holding a button until a sound is heard will flag the button.
The state of a flagged button cannot be changed until it is unflagged by holding it down again.

Once the grid is configured, press the large magenta button to submit it.
If any rows or columns of digits do not add up to the number shown on its corresponding display or fail to satisfy its colour condition, the border around that display will turn red.

Note: Though it may not necessarily be required, there is always a solution in which every row and column contains at least one button of each colour.


Interactive Controls

  • In Read mode, you can press [0]-[9] / Space on your keyboard or click individual squares to input the puzzle grid. Click the display boxes or press M/Y/C/W/Space on your keyboard to change their color. Enter the display digits into the text boxes. The button in the top-right corner will let you enter the number for the next color.
  • In Solve mode, the grid behaves like the module. Click a circle to switch colors and see the next number in the sequence. The color sequence is Magenta
    Cyan. The smaller number at the upper right of the main circle number is the next one in the sequence. Right-click a circle to mark it as known.
  • The sound effects can be muted.
  • Press the Manual button to switch into Generated mode where you can have fun solving generated puzzles.
  • The solution you came up with in Solve mode as well as the solution to generated puzzles can be shown or hidden.
  • Using the other buttons, you can switch all cells back to magenta, reset the marked cells, reset the save the current state of the grid, delete the saves, or reset everything.
  • On mobile, you can use switch from Selecting mode to Marking mode to mark cells.