## The MIT Basement Tunnel System (UPDATED)

(UPDATE: Guys, this isn’t the latest update of the map. Search the blog for “Update 3.”)

I spent today exploring the MIT basement tunnel system, and made a map.

Someone should seriously make a video or flash game with a world based on the MIT tunnels.

A few notes:

-Short, thin, white tick marks drawn perpendicular to the tunnel cut off portions of the tunnel that are locked and require special permissions to access. Note: the line at the lower left of building 68 that looks like one of these tickmarks is actually part of the building 66 sub-basement.
-Thin lines that don’t indicate locked areas show the passageways of sub-basements. There are sub-basements in buildings 32, 36, and 66 (well, at least the ones I’ve discovered so far).
-The break between the building 7 basement and the building 3 basement is a driveway.
-The tunnel between buildings 56 and 54 is very hot and has very squeaky pipes.
-The southern west-east tunnel in building 32 has pipes so squeaky they could make a symphony.
-The E25 tunnel smells like wood.

UPDATE: Basements of 9 and 13, sub-basement of 9 trekked, added. I’m very sure there should be something connecting 7 to 9, but I couldn’t find one.

## Hexagonal Ulam Spiral

So today, yet again, due to overcalculating how lost I’ll get and delay factors, I arrived at the recitation room an hour early, so I decided to fill up the time by making a hexagonal Ulam Spiral.

The pen-demarcated spiral indicates the hexagonal numbers. Notice that there’s some prime arteries (or as Vi Hart would call them, prime ribs) here as well.

## IMO: All cases of team score>216, by country

Note that the difficulty of the IMO varies significantly from year to year, and thus team scores cannot accurately reflect cross-year comparative ability. This collection of statistics is just for the statistics.

All years since 1983, when the 6-person team was established, are included.

Score between 217 and 228, inclusive
Score between 229 and 240, inclusive
Score between 241 and 252, inclusive
There is only one instance of the perfect score of 252: United States of America 1994.

People’s Republic of China: 1989, 1990, 1991, 1992, 1994, 1995, 1997, 2000, 2001, 2004, 2005, 2008, 2009

Union of Soviet Socialist Republics: 1984, 1987, 1988, 1989, 1991

Romania: 1987, 1989, 1991, 1995

Hungary: 1987, 1994, 1997

Russian Federation: 1994, 1995

Bulgaria: 1994, 2003

United States of America: 1987, 1994

Germany: 1987, 1991

German Democratic Republic: 1987, 1989

Islamic Republic of Iran: 1997

Vietnam: 1995