Re: [gnugo-devel] News from the olympiad

[Gunnar Farnebäck]

I wrote:
> Now they are finally in CVS, under regression/games/olympiad2004. Have
> fun and start writing regression tests. :-)

Here are some tests from the Indigo game ending with an unsettled
corner. Please review.

# I guess Q12 might be playable after all but it's very unorthodox and
# I'd prefer GNU Go to play some more normal fuseki move.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 5
??? reg_genmove black
#? [!Q12]

# G14 looks more natural than the played move at G12.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 65
??? restricted_genmove black G14 G12
#? [G14]

# Q10 looks too small and overly conservative. There are many
# larger moves on the board.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 79
??? reg_genmove black
#? [!Q10]

# GNU Go would have much easier games if it chose to block with J12
# in positions like this.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 109
??? reg_genmove black
#? [J12]

# N16 does connect but completely misses the point. GNU Go would win
# big by just making sure that the thrashing white group in the center
# doesn't spring to life.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 127
??? reg_genmove black
#? [G10|G9|G8|G7|J7|J6|K7]

# M15 is again too small. Subduing the big thrashing white dragon must
# have priority.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 135
??? reg_genmove black
#? [F11|F10|G10|E10|E9|E11|G7|F8]

# The focus must still be on the left. N18 is big but not big enough.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 141
??? reg_genmove black
#? [D11|H9]

# P18 looks at best like a questionable followup to N18. Playing on
# the left is urgent.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 143
??? reg_genmove black
#? [D14]

# Better capture than connect.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 161
??? restricted_genmove black D10 C8
#? [C8]

# E15 only threatens to make an eye in gote. Locally F15 is a better
# option but most natural is to block at B15 to secure two eyes and
# limit white's thrashing potential.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 179
??? reg_genmove black
#? [B15]

# Regardless whether the semeai still can be won after C14, blocking
# at B15 is the natural and much easier way to live locally and
# definitely win the semeai.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 183
??? reg_genmove black
#? [B15]

# T17 is totally meritless compared to any of the local alternatives.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 203
??? restricted_genmove black T17 S19 R19 O14 O13 S14
#? [S19|R19|O14|O13|S14]

# L9 is zero points gote.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 223
??? reg_genmove black
#? [!L9]

# A7 solves the tactical problem as well as B10 but also splits the
# eyespace into two parts.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 235
??? reg_genmove black
#? [A7]

# T14 is bigger than T4/T5.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 249
??? reg_genmove black
#? [T14]

# G18 is locally bigger than J19.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 281
??? restricted_genmove black J19 G18
#? [G18]

# Since white can get a ko after C11, it is necessary to first settle
# the semeai.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 287
??? reg_genmove black
#? [A7|A6|E4|A5]

# The semeai still needs settling. White can live or get a ko for the
# life and death of both by the combination of A1 and A7, followed by
# D4.
loadsgf games/olympiad2004/19x19/gnu-ind.sgf 289
??? reg_genmove black
#? [A7|A6|E4|A5]

/Gunnar