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GNU Go Documentation

4.5.2 Files in `patterns/'

The directory `patterns/' contains files related to pattern matching. Currently there are several types of patterns. A partial list:

• move generation patterns in `patterns.db' and `patterns2.db'
• move generation patterns in files `hoshi.db' etc. which are automatically build from the files `hoshi.sgf' etc. These comprise our small Joseki library.
• patterns in `owl_attackpats.db', `owl_defendpats.db' and `owl_vital_apats.db'. These generate moves for the owl code (see section 15.1 The Owl Code).
• Connection patterns in `conn.db' (see section 12.9 The Connections Database)
• Influence patterns in `influence.db' and `barriers.db' (see section 16. Influence Function)
• eye patterns in `eyes.db' (see section 11. Eyes and Half Eyes).

The following list contains, in addition to distributed source files some intermediate automatically generated files such as `patterns.c'. These are C source files produced by "compiling" various pattern databases, or in some cases (such as `hoshi.db') themselves automatically generated pattern databases produced by "compiling" joseki files in Smart Go Format.

• `conn.db'

  Database of connection patterns.

• `conn.c'

  Automatically generated file, containing connection patterns in form of struct arrays, compiled by mkpat from `conn.db'.

• `eyes.c'

  Automatically generated file, containing eyeshape patterns in form of struct arrays, compiled by mkpat from `eyes.db'.

• `eyes.h'

  Header file for `eyes.c'.

• `eyes.db'

  Database of eyeshape patterns. See section 11. Eyes and Half Eyes, for details.

• `helpers.c'

  These are helper functions to assist in evaluating moves by matchpat.

• `hoshi.sgf'

  Smart Go Format file containing 4-4 point openings

• `hoshi.db'

  Automatically generated database of 4-4 point opening patterns, make by compiling `hoshi.sgf'

• `joseki.c'

  Joseki compiler, which takes a joseki file in Smart Go Format, and produces a pattern database.

• `komoku.sgf'

  Smart Go Format file containing 3-4 point openings

• `komoku.db'

  Automatically generated database of 3-4 point opening patterns, make by compiling `komoku.sgf'

• `mkeyes.c'

  Pattern compiler for the eyeshape databases. This program takes `eyes.db' as input and produces `eyes.c' as output.

• `mkpat.c'

  Pattern compiler for the move generation and connection databases. Takes the file `patterns.db' together with the autogenerated Joseki pattern files `hoshi.db', `komoku.db', `sansan.db', `mokuhadzushi.db', `takamoku.db' and produces `patterns.c', or takes `conn.db' and produces `conn.c'.

• `mokuhazushi.sgf'

  Smart Go Format file containing 5-3 point openings

• `mokuhazushi.db'

  Pattern database compiled from mokuhadzushi.sgf

• `sansan.sgf'

  Smart Go Format file containing 3-3 point openings

• `sansan.db'

  Pattern database compiled from `sansan.sgf'

• `takamoku.sgf'

  Smart Go Format file containing 5-4 point openings

• `takamoku.db'

  Pattern database compiled from takamoku.sgf.

• `patterns.c'

  Pattern data, compiled from patterns.db by mkpat.

• `patterns.h'

  Header file relating to the pattern databases.

• `patterns.db' and `patterns2.db'

  These contain pattern databases in human readable form.