Tsumego ‘Exhaustion’
This first exercise focuses on systematically visualizing every possible move in relatively simple Tsumego puzzles—including those that seem unreasonable or incorrect at first glance. This helps you stay open to viable moves that go beyond the ‘good shape’ and of course it trains your mental eye. An important goal of the exercise is to avoid wishful thinking (Japanese: 勝手読み ‘Katte-Yomi’) when reading a situation.
If you have no Tsumego book, you can try Cho Chikun’s ‘Tsumego at a Glance’.
Note: Neither Richard Bozulich’s ‘Get Strong at Life and Death’ nor James Davis’ ‘Life and Death’ are Tsumego Books. They are about standard shapes that need to be learned by heart.