I just checked to be sure; Steenvreter correctly passes in both
examples. I'm speculating, but I think your problem is that you only
adjust for the difference between Japanese and Chinese counting in the
playouts. However, once consecutive passing gets into the tree you
have to correct earlier.
Hi Erik,
Actually I have corrected the scoring in the tree as well. In my approach,
no matter in the tree or in the playout, the Chinese-style scoring is
adjusted according to Margin and the PASS counts of both sides.
I think your two phases consideration is correct. And I believe my approach
has no problem for this. Whatever we do to the Chinese scoring, it should be
equivalent to the Japanese scoring, except the special cases of seki. For
example, if one move loses 1 point in Chinese scoring (such as filling own
territory), it should also loses 1 point in Japanese scoring. If one move
gains 1 point in Chinese scoring, it also gains 1 point in Japanese scoring.
They are equivalent no matter in the tree or in the playout.
So, based on such concept, my approach is OK in your confirmation phase. No
matter in the tree of playout, if Black loses 1 point by filling own
territory or playing in White's territory, in the next move White will do
the same thiing and cancel back Black's loss. Likewise, if there are moves
to gain profit, it is equivalent for the playouts for both scoring methods
to play at such points.
(No long no see, will you go to Japan this olympiad?)
Aja
The way I think of it Japanese rules have two phases: (1) the game
phase and (2) the confirmation phase. In the game phase passing first
can gain a point. In the confirmation phase it can not. The
confirmation phase normally starts after 2 consecutive passes. If the
confirmation phase has not started yet in the tree then the entire
playout can be considered a confirmation phase.
Erik
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