[Pachi] Regression test suite

Jean-loup Gailly jloup at gailly.net
Fri Jun 10 22:14:11 CEST 2011

- http://files.gokgs.com/games/2011/6/9/botkiller2-pachi30s.sgf
  threw away a won game. pachi thought until the end that top left
  white group was dead, so it made silly moves elsewhere.
  The playouts must be prevented from filling the eye at A17.

- http://files.gokgs.com/games/2011/6/10/pachi30s-samba-2.sgf
  exactly the same problem as botkiller2-pachi30s.sgf:
  pachi considers the top left black group as unsettled
  although it is clearly alive. So it makes silly moves
  elsewhere. We have to fix this bug, it is too frequent.

- http://files.gokgs.com/games/2011/6/9/jinen-pachi30s-2.sgf
  move 165 G5 again playing the ko threat before the ko.
  move 187 R18 is not a ko threat
  move 215:
    At this point pachi still considers the top right as
    unsetled, although it is is clearly lost for B. So pachi's
    estimate of winning by 61% is way too optimistic.

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