I have recently been introduced to formal math and have found that the difficult exercises that are usually found at the ends of chapters really help cement my understanding and intuitive grasp of the material. They usually help me make certain integral realizations. Even when I mull over the material myself and make connections, exercises make me confident that if you wake me up in the middle of the night and ask me a question I'll be able to answer it. I really enjoy learning Gemara in the most focused and most rigorous manner, which is incredibly mentally and physically demanding (one must exert much energy to truly probe the depths of a sugya). However, I feel that even when I've been able to identify a chakira among Rishonim, get to the bottom of a really difficult tosphot, the area I struggle most in is mastering the art of integrating the nuanced views of all the Rishonim into a coherent picture and being able to directly answer questions that require me to draw from an intuitive and integrated understanding. Even when I've thought deeply about the Rishonim on my own, asked what my Rebbe says are good questions, I don't feel confident in my instantaneous and intuitive grasp of all the nuance. **Therefore, I was wondering if anyone can recommend a book of super high quality exercises in Gemara. That is, not asking what the pshat means, but asking me to go out, read what rishon A, B, and C says, and then prove something with that.** In particular, I am studying Kiddushin, so Kiddushin problems would be really helpful.