# Vital point method with one point eyes

Difficulty: Intermediate   Keywords: Life & Death

Here is an attempt for a systematic approach for finding the vital point, if your eye isn't trained to see it on the spot.

Reference diagram

This position is taken from Gokyo Shumyo, Section 1, Problem 25. White to live. Let's try to make a one-point eye with as few moves as possible.

Diagram 1

Diagram 2

Diagram 3

Diagram 4

Reference diagram

Looking back at the reference diagram, points a and b occur in three of the four diagrams. Both are vital points, but a is more valuable than b, because a occurs in both diagrams with two stones. This reasoning can easily be quantified.

Conclusion: a is the vital point.

Reference diagram again

Is it a correct reasoning that the vital point can be seen as the connection between shared liberties of different groups (marked by )?

Tas: a is also the vital point of this bulky five

Reference diagram

Vital point method with one point eyes last edited by 130.225.100.155 on November 21, 2007 - 12:20