Sometimes in the gemara there are questions that for whatever reason are unable to be answered, and to such a question the gemara simply says "teiku" (usually translated to mean "let it stand").
Does a list exists that gathered together all of the cases in the Talmud where Teiku is invoked?
Rabbi Aaron Pessin has an entire sefer dedicated to all the "teiku"s that appear in Shas. The entire Sefer can be found online here.
R' Pessin lists 317 times in Shas Bavli from Brachos 8a to Nidda 63a. There is a complete listing which is too large to copy here, but I can at least copy the breakdown by Mesechta.
