On the AoC website you need to provide solutions for each day in a given year to see the next day’s problem, so you can’t instantly see all the problems from a given year unless you’ve previously completed them.
You may be able to find the problems elsewhere on the net.
All problems are available as long as their day has come even while the event is running. But the part 2 of each problem requires solving part 1 first.
NLips|4 years ago
I think it started in 2015.
On the AoC website you need to provide solutions for each day in a given year to see the next day’s problem, so you can’t instantly see all the problems from a given year unless you’ve previously completed them.
You may be able to find the problems elsewhere on the net.
forgotpwd16|4 years ago
wodenokoto|4 years ago
https://adventofcode.com/2019
Not everyday is about intcodes, but day 2, 5 and 7 are the first 3 days with intcodes and they built on top of eachother.