[gnugo-devel] arend_3_20.8 and EB1401

[Paul Pogonyshev]

some changes went in with this patch are bogus:

Pattern EB1403
# gf Revised pattern. (3.1.3)
# gf Revised constraint. (3.3.13)
# ab Removed followup value (handled by influence code). (3.3.20) <<<

?oX??          sente hane
..XO?
?.*.o
-----

:8,Xe

?oD??
b.Da?
?.*..
-----

see move valuation in the attached game (current cvs - gnugo 3.2) at move 91:

  C1: 2.00 - change in territory
  C1:   0.00 - total followup value, added 0.00 as territorial followup
  C1: 0.08 - connects strings (connect value 2, shape factor 0.040)
Move generation values C1 to 2.08
  T17: 2.00 - change in territory
  T17:   0.00 - total followup value, added 0.00 as territorial followup
  T17: 0.08 - connects strings (connect value 2, shape factor 0.040)
Move generation values T17 to 2.08

i can't say for sure if the move played by both current cvs and gnugo 3.2 (B19)
is worse than C1 or T17, but the latter are clearly undervalued. is B19 really
worth 5 points like EB1401 claims? to me it rather looks like 3 points (plus a
vague followup, maybe). and the 'o' in the pattern seems like influencing move
valuation.

Pattern EB1401

|.XO?          large endgame move
|.XO?
|.*.o
+----

:8,OXe,value(5)

Paul

1.sgf
Description: Text document