Late Yose Problems
Usually professional games records do not include the last 10 to 30 moves. In most cases these dame filling and consolidating moves are completely obvious.
But about 10% of close games include nice tesujis (or reinforcements to prevent them). Also finding the correct order of moves that gives an optimum result is quite a challenging problem for beginners like me.
I started to look for finished professional games to test automatic go scoring algorithms. Since game records end before the dame are filled, I had to finish them myself by adding the last moves. Only these last "obvious" moves are not always easy to find. Here I will put some example of games that require a special attention.
- Fujitsu 8 game 6 - half-point win
- Fujitsu 8 game 9 - seki or not seki
- Fujitsu 4 game 16 - semeai
- -- more later --
Sometimes I have been unable to understand how the recorded score was obtained. There are at least three possible explanations:
- I missed a tesuji or needed reinforcement - some records are very puzzling, see below,
- one of the player did not play the perfect moves because a less risky move won the game anyway - I have heard that this happens sometimes, but is very unlikely because professionals can easily play the perfect last endgame moves,
- there is a mistake in the game record.
Here are some examples of puzzling scores, that are still a mystery for me (I am sure someone will be able to explain these):
- Fujitsu 3 game 5 - winner inversion?
- -- more later --
--jvt
See also: