 ## On the Subject of Shapes And Bombs

I wonder what shape I would input today...

• You have a set of buttons which you can press to light/unlight.
• The lit squares have a color and form a letter.
• With this information, you have to determine which shape to submit based on the steps below.

### Letter values (Table 1):

A B D E G I K L N O P S T X Y
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

### Sequence number table (Table 2):

Yellow Green Cyan Blue Purple
Module’s letter value Number of current modules Number of total lit squares Number of total unlit squares Use the number 0
• When using this table you need to keep the Initial number.
This means the number you got before applying the step below.
• If the number you got is greater than or equal to 15, subtract 15.

### Letter tables (Table 3):

Yellow Green Cyan Blue Purple
K E P K I N O N S A B D Y X T
T A L G S L L Y P E G I S P O
I N G E D Y K I D K L N N L K
D O B O P X T X B O P S I G E
Y X S T A B A E G T X Y D B A

### Step 1 (Expert):

• Use the corresponding table in Table 3 based on the squares’ color.
• After that, you need to do these steps:
• Start on the position of the module’s initial letter.
• Based on the arrow sequence of the module, start from the number you got from Table 2.
• Follow the directions indicated by the arrows, if you leave the table, wrap to the other side.
• Repeat the step above until the arrow sequence of the module resets back to 0.
• When you’ve finished the steps above, the number in where you need to start the arrow sequence in the module is the value of the letter (Table 1) on which you ended.

### Step 2 (Defuser):

• Now that you got the number on where to start the arrow sequence on the module:
• You need to start in the square from the Initial number (Table 2) plus one, left-to-right and top-to-bottom starting from 1 on the top-left.
If the number is greater than 40, leave it at 40.
• In the arrow sequence, start from the number that you got at the end of Step 1.
• After following an arrow direction, you have to light/unlight the square you’re at.
• If the current square you’re on before following an arrow direction is unlit, follow the direction on the opposite side.
Example: Right-Down becomes Left-Up
• Repeat these steps until the arrow sequence resets back to 0.
• After you’ve done all of these steps, you can go to Step 3.
• Press the number below the arrow screen to go to the next number.
• Press “Reset” to go back to the initial letter state.
• Press “Empty” to unlight all the current lit squares.

### Step 3 (Shape):

• If the last digit of the serial number is even, count the lit squares; otherwise, count the unlit squares.
• If the module’s initial letter value (Table 1) is even, only count in the upper half; otherwise, only count in the bottom half.
• Next, look up the corresponding table to see which shape fits the number you got:
• If the number is smaller than 5, leave it at 5, otherwise; if it is greater than 14, leave it at 14.
• NOTE: White squares means unlit and gray squares means lit.
Solved modules is even
5 6 7 8 9
10 11 12 13 14
Solved modules is odd
5 6 7 8 9
10 11 12 13 14

• Once you've determined the shape, you need to make that shape in the module and press the button “Submit”.

# Interactive module

### Controls

• Arrow screen: Changes the arrow on the current number.
• Number screen: Increments the number.
• Start/Stop: To start/stop the arrow sequence.
• Reset: Resets the arrows
• Empty: Empties led grid.
• Letters: Makes that specific letter on the led grid.