I think the main problem is that when you get into the exercises that require combinations of tactics, it assumes the student has the capacity to make that leap, or recall on demand everything they have learned and put them all together without a helping hand.
I'm towards the end of "Diving Deep" and I'm ready to give up as the exercises continually lead me to brute force moves until I hit the specific move you are looking for.
I'm towards the end of "Diving Deep" and I'm ready to give up as the exercises continually lead me to brute force moves until I hit the specific move you are looking for.