Prisoner’s dilemma tournament results

The pris­oner’s dilemma tour­na­ment is over. There were a to­tal of 21 en­tries. The win­ner is Mar­garet Sy, with a to­tal of 39 points. 2nd and 3rd place go to rp­glover64 and THE BLACK KNIGHT, with scores of 38 and 36 points re­spec­tively. There were some fairly in­tri­cate strate­gies in the tour­na­ment, but all three of these top scor­ers sub­mit­ted pro­grams that com­pletely ig­nored the source code of the other player and acted ran­domly, with the win­ner hav­ing a bias to­wards defect­ing.

You can down­load a chart de­scribing the out­comes here, and the source codes for the en­tries can be down­loaded here.

I rep­re­sented each sub­mis­sion with a sin­gle let­ter while run­ning the tour­na­ment. Here is a di­rec­tory of the en­tries, along with their scores: (some peo­ple gave me a term to re­fer to the player by, while oth­ers gave me a term to re­fer to the pro­gram. I went with what­ever they gave me, and if they gave me both, I put the player first and then the pro­gram)

A: rp­glover64 (38)
B: Wat­son Ladd (27)
D: skep­sci (24)
E: Devin Bayer (30)
F: Billy, Mimic-- (27)
G: itaibn (34)
H: Co­op­er­ateBot (24)
I: Sean Nolan (28)
J: oaz (26)
K: selbram (34)
L: Alexei (25)
M: LEmma (25)
N: BloodyShrimp (34)
O: caa (32)
P: nshep­perd (25)
Q: Mar­garet Sy (39)
R: So8res, NateBot (33)
S: Quinn (33)
T: HonoreDB (23)
U: SlappedTo­geth­erAtTheLastMinuteBot (20)