## On the Subject of Leveraging through Logic

“Okay, so I know that each door has to lead somewhere, which means that somewhere at the place where we're trying to go there must be a reverse door that leads here. ... Another victory for logic. Come, Stanley,
our destiny awaits!”

### Instructions:

These tables are designed such that you can work out which letters are true quickly and easily, given the edgework. These conditions must be met *exactly* (unless otherwise specified) in order for the letter to be true.

#### Batteries

Condition |
Letter(s) |

0-1 batteries |
H |

2-4 batteries |
G |

5+ batteries |
G J |

1 holder |
U |

3+ holders |
N |

batteries = indicators |
A |

#### Ports

Condition |
Letter(s) |

0-1 ports |
Z |

2 ports |
Q |

6+ ports |
Y |

2+ port types |
F |

all unique ports |
M |

Parallel |
P |

PS/2 |
R |

#### Indicators

Condition |
Letter(s) |

0 total ind. |
W |

1 total ind. |
X |

3+ total ind. |
L |

1 lit ind. |
K |

1 unlit ind. |
E |

lit and unlit ind. |
O |

"IND" |
C |

"FRK" |
D |

"MSA" |
T |

#### Serial Number

Condition |
Letter(s) |

letters > numbers |
B |

last digit is odd |
I |

sum of digits > 10 |
S |

vowel |
V |