Life and Death
They seem to focus strictly on life and death, but perhaps their intent is go problems in general? I think tesuji problems are particularly important to SDK players, and they help with life and death. Tesuji is particularly important in fighting, and relates well to learning to love the fight. I don't think either life and death or tesuji should be neglected, both are critical to increasing reading strength, which is a defining characteristic of stronger players.
I enjoy tsumego/tesuji problems, and try to spend a little time each day. It's part of my current study regime, and I focus more on problems than on playing games. Like the book said, it's a separate, enjoyable activity for me.
My favorite article about tsumego and reading strength is from tchan's translation of Cho Chikun (requires permission, you may request from tchan via wordpress):
https://tchan001.wordpress.com/2011/06/ ... lculation/
2 minutes for life and death - I agree with this. In general, I focus on easier problems for my level. I do not find it helpful or enjoyable to stare at a problem for 10 minutes unsolved. While some problems require additional reading time (Book to Increase Your Fighting Strength at Go), that reading time should be spent on progressing with the problem, not on still trying to find the first move and followup. I'm of the belief that solving 5-10 problems completely is more important than spinning your hamster wheel trying to solve 1 problem.
Strengths and Weaknesses
I like what was said about focusing on your strengths first, and only after the plateau, should you start focusing on weaknesses. People are far more motivated by what they enjoy doing. For me, that is tsumego and tesuji problems. I'm not that good at the opening (usually behind in the opening) or endgame, but I'm not terrible in a fight.
Overview
The intro section was mostly about what to study and how to study if you want to get stronger. I think it does a good job of covering that, though its a re-iteration of various advice elsewhere (including GGG's site:
https://gogameguru.com/how-to-get-better-at-go/). However, I think it was important to provide these sections in this book. The reiteration helps reinforce these ideas.
studying wrote:Health/Wellness: The more tournaments I play in, the more I appreciate the importance of managing hunger and energy during an intense day of competition. I now always carry snacks and water. I find this makes the biggest difference in late afternoon play, but again, I'd be curious if others have other suggestions.
After work, I don't play before I've had dinner. I haven't yet played in a tournament, but couldn't imagine playing without regular food. I also get migraines if I don't eat in a timely manner, so that definitely encourages me to eat regularly. I think this is an important point though, as poor sleep and diet has been shown to negatively impact performance.