I'm looking for a big list of resources for advanced undergraduate - beginning graduate (and even beyond, really) with a particular feature. Namely, I really like solving "project"-like problems that include the general direction of the proof. I think it helps keep me motivated and learn more by solving multi-step problems with some direction.
Here are a few specific examples:
Dummit & Foote, pg. 96:
Dummit & Foote, pg. 268-269
Bartle, Elements of Real Analysis, p. 273
Generally, these problems are few and far between (probably for good reason) but I was hoping there were some books (from any subject area!!) that go out of the way to include problems like this.
Obviously I am familiar with Dummit & Foote and Bartle's Elements of Real Analysis. I know Rudin's PMA also has quite a few problems in the same vein. Which do you know?