Ticket #185 (closed defect: fixed)

Opened 5 years ago

Last modified 5 years ago

Tactical reading mistake

Reported by: gunnar Owned by: gnugo
Priority: normal Milestone: 3.7.11
Component: source Version:
Severity: normal Keywords:
Cc: patch: yes

Description

In this position






tactical reading fails to capture the single black stone since attack1() doesn't consider the back-capturing move in the corner. This is because the black stone is adjacent to two strings in atari and the possibility that the same move saves both strings is ignored.

Attachments

testcases_7_11.2.diff Download (586 bytes) - added by gunnar 5 years ago.
Testcase.
gunnar_7_11.7.diff Download (2.3 KB) - added by gunnar 5 years ago.
Back-capture in more situations to avoid snapback in attack1().

Regression Results

Attachment Rev. PASS FAIL Nodes Status
gunnar_7_11.7.diff Download 2383 2 +0.079% +0.031% +0.007% details
testcases_7_11.2.diff Download never tested

Change History

Changed 5 years ago by gunnar

Testcase.

Changed 5 years ago by gunnar

Back-capture in more situations to avoid snapback in attack1().

comment:1 Changed 5 years ago by gunnar

  • patch set

comment:2 Changed 5 years ago by gunnar

Regression results look good. 

owl1:372        PASS 1 D18 [1 D18]
reading:234     pass
2 PASS (1 PASS, 1 pass)
Total nodes: 1710775652 3341048 12431392 (+0.079% +0.031% +0.007%)

comment:3 Changed 5 years ago by gunnar

  • Status changed from new to closed
  • Resolution set to fixed
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