On the Subject of Cruel Keypads

Do you know Korean?

  • This module displays Korean letters, a colored bar, and a stage counter. There are 3 stages.
  • To disarm the module, press the symbols in the correct order. For each stage, use the Venn diagram below to find out which table to use.
  • Apply the special rule and input the symbols in the correct order.
The strip is red, blue or green
This is stage 1 or 3
Any of these symbols are present: ㅇ ㅈ ㅉ ㅟ ㅋ
If the color of the strip contains a letter* in common with the serial number.

* The possible colors are: Red, Blue, Green, Yellow, Magenta, and White.

Table A

Order
Special ruleSwitch the first press with the last and the second with the third.

Table B

Order
Special ruleIf it's stage 2 or 3 then switch the first press with the fourth press.

Table C

Order
Special ruleIf there is a ps/2 port on the bomb and any lit indicator then reverse the order. Otherwise switch the first press with the second.

Table D

Order
Special ruleIf this or any of the previous stages contained a ㅟ letter then reverse the order.

Table E

Order
Special ruleIf the strip in any of the previous stages were yellow or blue then input in the reverse order.

Table F

Order
Special ruleIf the serial number contains a letter or number in common with any of the ports on the bomb then swap the third press with the fourth. Otherwise swap the first and the second.