pygo/gnugo/patterns/fuseki.db

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# This is GNU Go, a Go program. Contact gnugo@gnu.org, or see       #
# http://www.gnu.org/software/gnugo/ for more information.          #
#                                                                   #
# Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,   #
# 2008 and 2009 by the Free Software Foundation.                    #
#                                                                   #
# This program is free software; you can redistribute it and/or     #
# modify it under the terms of the GNU General Public License       #
# as published by the Free Software Foundation - version 3,         #
# or (at your option) any later version.                            #
#                                                                   #
# This program is distributed in the hope that it will be           #
# useful, but WITHOUT ANY WARRANTY; without even the implied        #
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR           #
# PURPOSE.  See the GNU General Public License in file COPYING      #
# for more details.                                                 #
#                                                                   #
# You should have received a copy of the GNU General Public         #
# License along with this program; if not, write to the Free        #
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor,       #
# Boston, MA 02111, USA                                             #
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#
#  The General Fuseki Pattern Database, fuseki.db
#
#  Further documentation may be found in the Texinfo documentation
#
#  First there is a pattern title of the form: Pattern [string]. The
#  string is used for identifying the pattern while tuning or debugging.
#
#  Then a block of the following characters representing the pattern
#  itself.
#  
#  ?     : don't care
#  .     : empty
#  X     : your piece,
#  O     : my piece,
#  x     : your piece or empty
#  o     : my piece or empty
#  *     : my next move
#  -, |  : edge of board
#  +     : corner of board
#
#  If a pattern must not match at the edge of the board,
#  an extra row of ?'s in the pattern may be added. (This
#  will not add to the time taken to check the pattern.)
#
#################
#
#  After the pattern, some supplementary information in the format:
#
# :trfno, classification, [values], helper_function
#   
#  These and other aspects of the pattern database are documented
#  in the Texinfo documentation.
#
#################
#
#  Any line beginning with #, or any part of a line following
#  whitespace is a comment. 
#
#  The patterns are classified into two different categories:
#  
#  F     fuseki
#  J     joseki
#
#  The patterns are grouped in the file by category. New patterns
#  should be added close to a similar pattern or at the end of the
#  category where it belongs. When a new pattern is added, the names
#  of later patterns in the category should usually not be changed.
#  This can be accomplished by introducing names like F10b and so on.
#


######################################################################
#
# Fuseki patterns
#
# These patterns need to be revised.
#
# Various corner enclosures, kakaris, and extensions along the edges.
#
# These patterns are further subdivided into the following classes
#
# Approach moves
# Corner enclosures
# Edge extensions from corner positions
# Center extensions from wide positions
# Edge extensions
# Edge extensions combined with approach moves
# Pincers
# Invasions in the middle of the edge
# Jumps
#
######################################################################


attribute_map general

goal_elements none
callback_data XOxo


################
# Approach moves
################


#### Low (keima) kakari


Pattern F1

|..???...ooo   approach star
|...X.....O.
|.....*.....
|...........
|...........
+-----------

:8,FEad


Pattern F2
# Made attack dependent on extension space (3.1.25) /ab

|..???.ooo   low kakari against star
|...X.....
|.....*...
|.........
|.........
+---------

:8,FeE


Pattern F3

|..???.oooo   low kakari against star with space for extension
|...X......
|.....*...o
|..........
|..........
+----------

:8,FeEat,shape(1)


Pattern F3h
# db added (3.3.9)

|..........     keima kakari against star, high handicap game
|...X.....x
|.....*...x
|..........
|..........
+----------

:8,FEj,shape(.025)

|..........
|...X.....a
|.....*...b
|..........
|..........
+----------

; x_alive_somewhere(a,b)


#### High (ikken taka) kakari
#### not so good in relation to the corner since the
####     3-3 point relationship is inferior.


Pattern F4
# Made attack dependent on extension space (3.1.25) /ab

|.........   high kakari against star
|...X.*...
|.........
|.........
|.........
+---------

:8,FE


Pattern F4a

|.........oo   high kakari against star
|...X.*...oo
|.........oo
|...........
|...........
+-----------

:8,FEa


Pattern F5d
# db added (3.3.9)

|..........      high kakari against star
|...X.*...x
|.........x
|..........
|..........
+----------

:8,FEj

|..........
|...X.*...a
|.........b
|..........
|..........
+----------

; x_alive_somewhere(a,b)


#### Two space high (nikken taka) kakari


Pattern F5
# Made attack dependent on extension space (3.1.25) /ab

|.........   far high kakari against star
|...X..*..
|.........
|.........
|.........
+---------

:8,FE


Pattern F5a

|.........oo   far high kakari against star
|...X..*..oo
|.........oo
|.........oo
|.........oo
+-----------

:8,FEa


Pattern F5h
# db added (3.3.9)

|..........   far high kakari against star
|...X..*..x
|.........x
|..........
|..........
+----------

:8,FEj,shape(.01)

|..........
|...X..*..a
|.........b
|..........
|..........
+----------

; x_alive_somewhere(a,b)


Pattern F6

|....??   3-3 point invasion
|.....?
|...X..
|..*...
|......
|......
+------

:/,FI


Pattern F7
# similar to F6, but the difference makes it worthwhile to have both

|...??         san san
|...X?
|..*..
|.....
|.....
+-----

:/,FI,shape(-2)


Pattern F8

|.......   Low kakari against 3-4
|.......
|..X....
|....*..
|.......
|.......
+-------

:8,FeEaj


Pattern F9

|.........   Low kakari against 3-4
|.........
|..X.....o
|....*...o
|.........
|.........
+---------

:8,FeEaj,shape(4)


Pattern F10

|.......   High kakari against 3-4
|.......
|..X.*..
|.......
|.......
|.......
+-------

:8,FeEaj


Pattern F11

|.........   High kakari against 3-4
|.........
|..X.*..oo
|.......oo
|.........
|.........
+---------

:8,FeEaj,shape(4)


Pattern F12

|..????   3-3 point invasion under 5-3
|....??
|....??
|..*.X?
|.....?
|......
+------

:8,FIj,shape(2)


Pattern F13

|......  3-4 point kakari against 5-3
|......
|......
|..*..?
|....X?
|.....?
|......
+------

:8,FeEaj,shape(1)


Pattern F14a

|......  high kakari against 5-3
|......
|......
|......
|......
|...*..
|.....?
|....X?
|.....?
|......
+------

:8,FeEaj,shape(1)


Pattern F14b

|......      takamoku joseki
|...X..
|......
|...*..
|......
|......
+------

:8,FeEaj,shape(2)


Pattern F15

|..????  3-3 point invasion under 5-4
|...???
|...X??
|......
|..*...
|......
|......
+------

:8,FIj,shape(1)


Pattern F16a

|......   shoulder hit on san-san
|......
|...*..
|..X...
|......
|......
+------

:/,FEaj,shape(1)


Pattern F16b

|........   ogeima approach to san-san
|........
|........
|........
|...*....
|........
|........
|..X.....
|........
|........
+--------

:8,FEaj,shape(1)


Pattern F17

|..oo......   low kakari against star with space for extension
|..........
|..........
|..........
|...X.....o
|.....*...o
|..........
|..........
+----------

:8,FeEaj,shape(3)


Pattern F18

|..oo......   high kakari against star with space for extension
|..........
|..........
|..........
|...X.*...o
|.........o
|..........
|..........
+----------

# The shape value is carefully chosen so that the low kakari will be
# played much more often, but not always.
:8,FeEaj,shape(2.98)


Pattern F19

|..xxX	    go-go invasion at san-san
|....x
|..*.x
|.....
|.....
+-----

:/,FeEaj, shape(1)

|..abX
|....c
|..*.d
|.....
|.....
+-----

; x_alive_somewhere(a) + x_alive_somewhere(b)
; + x_alive_somewhere(c) + x_alive_somewhere(d) <= 1


Pattern F20

|...????    go-go invasion at hoshi
|.....??
|....X.?
|...*..?
|.......
|.......
|.......
+-------

# I think this is suboptimal, thus the worse shape. /ab
:/,FeEaj, shape(0.94)


Pattern F21

|..?xx??    go-go invasion at komoku
|.....??
|....X.?
|..*...?
|......?
|.......
|.......
+-------

:8,FeEaj, shape(1)


Pattern F22

|..o???
|..oo??
|......    5-3 approach move to go-go
|......
|..*.X.
|......
|......
|......
|......
+------

:8,FEaj,shape(1)


###################
# Corner enclosures
###################

Pattern F101

|......        ikken shimari
|......
|..*.O.
|......
|......
|......
+------

:8,FeEj,shape(3)


Pattern F102

|.........        lower shimari is better if X can approach
|.........        at 7-3 (left of a) too easily
|..O.*.ooo
|......ooo
|.........
|.........
+---------

:8,FeEj,shape(3)

|.........
|.........
|..O.*.ooo
|......oao
|.........
|.........
+---------

;!xmoyo(a)


Pattern F103

|.......        kogeima shimari
|.......
|..O....
|....*..
|.......
|.......
+-------

:8,FeEj,shape(3)


Pattern F104

|........        ogeima shimari
|........
|..O.....
|.....*..
|........
|........
+--------

:8,Fj,shape(1)


Pattern F105

|.......        kogeima shimari
|.......
|..*....
|....O..
|.......
|.......
+-------

:8,FeEj,shape(3)


Pattern F106

|...O..        defend corner from star
|......
|...O..
|....*.
|......
|......
+------

:8,Fet,shape(-3)


Pattern F107a
# This is a large move since it closes the corner. It
# is not large enough to warrant the j classification.

|..O...        defend corner from star
|......
|...O..
|....*.
|......
|......
+------

:8,Fet,shape(-1)


Pattern F107b

|..O...        defend corner from star
|......
|......
|...O..
|...*..
|......
|......
+------

:8,Fet,shape(-1)


Pattern F108

|..O...        defend corner from star
|......
|...O..
|.....X
|...*..
|......
+------

:8,Fet


Pattern F109
# gf Added constraint. (3.1.22)
# See nngs:1030.

|.......       enclosure from star
|..*....
|.......
|...O...
|.......
|.......
|.......
+-------

:8,FEt,shape(-2)

|...a...
|..*....
|.......
|...O...
|.......
|.......
|.......
+-------

;!omoyo(a)


Pattern F109b
# gf New pattern. (3.1.22)

|.......       enclosure from star
|.......
|.......
|.......
|..*....
|.......
|...O...
|.......
|.......
|.......
+-------

:8,FEt,shape(-2)


Pattern F110

|..xx......       extend between two stones on 4-th line
|..........
|...O.....O
|.....*....
|..........
|..........
+----------

:8,FEt,shape(-1)


#######################################
# Edge extensions from corner positions
#######################################

Pattern F201
# gf Increased value. (3.1.17)

|...O.........    wide extension from ikken shimari
|.............
|...O.....*...
|.............
|.............
+-------------

:8,FeEj,shape(0.5)


Pattern F202
# gf Increased value. (3.1.17)

|..O..........    wide extension from kogeima shimari
|.............
|...O.....*...
|.............
|.............
+-------------

:8,FeEj,shape(0.5)


Pattern F203

.O......         4 space extension from 1 space jump
........
.O....*.
........
........
--------

:8,FeEt


Pattern F204

O.......?         4 space extension from knight's move
........?
.O....*..
........?
........?
---------

:8,FeEt


Pattern F205

O........         4 space extension from knight's move
.........
.O....*.X
.........
.........
---------

:8,FeEt,shape(1)


Pattern F206

|.............    wide extension from ikken shimari
|..O.O........
|.........*...
|.............
|.............
+-------------

:8,FEt


Pattern F207

|.............    wide extension from kogeima shimari
|..O..........
|....O....*...
|.............
|.............
+-------------

:8,FEt,shape(-1)


Pattern F208

.O.......         3 space extension from 1 space jump
.....*...
.O......O
.........
.........
---------

:8,eE,shape(-2)


Pattern F209

|...................|      San ren sei!
|...................|
|...O.....*.....O...|
|...................|
|...................|
|...................|
+-------------------+

:8,FEt,shape(3)


Pattern F210

|............      Wide extension from star
|............
|............
|...O.....*..
|............
|............
|............
+------------

:8,FEt,shape(1)


#######################################
# Center extensions from wide positions
#######################################


Pattern F301

?????.??    jump up to claim space from 4 point extension
?....*..
........
O....O.X
........
........
--------

:8,FEt


Pattern F302

.......	   jump up to claim space from 4 point extension
?....*.
.......
O....O.
.......
.......
-------

:8,E


Pattern F303

......      seal the largest area
..*...
O....O
......
O....O
......
......
------

:8,E,shape(-2)


Pattern F304

......       light reducing move
......
.....X
.*....
X....X
......
......
------

:8,FEt


Pattern F305

X.*oo         usually bad
...oo
.O.oo
.....
.....
-----

:8,F,shape(-5)


Pattern F306

oo......       jump to expand
oo...*..
oo.....x
.....O.x
........
........
--------

:8,E

oo......
oo...*..
ab.....x
.....O.x
........
........
--------

; o_alive_somewhere(a,b)


Pattern F307

?......o        stand to defend extension
X.*..ooo
.XO..ooo
........
........
--------

:8,FJ

?......o
X.*..abc
.XO..def
........
........
--------

; o_alive_somewhere(a,b,c,d,e,f)


#################
# Edge extensions
#################


Pattern F401
# gf Added constraint. See gunnar:92. (3.7.10)

x......xx     make 2 space extension on third row
x.*..O.xx
.......??
.......??
---------

:8,edj

x.e....ab
x.*..O.cd
.......??
.......??
---------

; x_alive_somewhere(a,b,c,d) && !oterri(e)


Pattern F402

......x?    make 2 space extension on third row
.O..*.x?
......x?
........
--------

:8,ed


Pattern F403
# This should only be j or J if the O stones do not already
#      have a base, t otherwise. But they usually do not
#      have a base as this pattern most naturally comes up.

......o?  make 3 space extension from two stones
......O?
..*...O?
?.......
?.......
--------

:8,Fedj,shape(1)


Pattern F404

......o?  make 3 space extension from two stones
..*...O?
......O?
?.......
?.......
--------

:8,FEdj,shape(1)


Pattern F405
# FIXME: This seems overconcentrated.  See also F406
#   Probably best to remove this pattern.

?.....o?
...*..O?  make 3 space extension from two stones
O.....O?
........
........
--------

:8,e

?.....o?
...*..O?
O..a..O?
........
........
--------

;!oterri(*) && !oterri(a)


# tm Removed (3.1.24)  This is just overconcentrated.
#Pattern F406
## dee trevord:1000
#
#......o?  make 2 space extension from two stones
#O..*..O?
#......O?
#.......o
#........
#--------
#
#:8,FtEd



Pattern F407
#tm modified (3.1.20) 
#     (see nngs:1150, nngs:1030, nngs:1230)

.....???
......??   make 2 space extension on third row
.O..*...
......??
......??
--------

:8,ed


Pattern F408
# gf Added constraint to avoid overconcentration. See 13x13:12,
#    13x13b:42. (3.3.17)

.......        extend
oO..*..
.......
.......
-------

:8,ed

.....a.
oO..*..
.......
.......
-------

;!omoyo(a)


Pattern F409

?......??     3 space high extension
.....*...
.O.......
.........
.........
---------

:8,Ed


Pattern F410

???......?            extend
???.O....?
???....*.?
???.......
???.......
----------

:8,Ed


Pattern F410a

?xx......?            extend
?xx.O....?
?xx....*.?
?xx.......
?xx.......
----------

:8,FEdt,shape(3)

?xx......?
?ab.O....?
?cd....*.?
?xx.......
?xx.......
----------

; x_alive_somewhere(a,b,c,d)


Pattern F410b
# gf Made constraint diagram consistent with main diagram. (3.1.18)

x........??           extend
x...O....xx
x......*..?
x.........?
x.........?
-----------

:8,FEdj,shape(2)

x........??
a...O....xx
b......*..?
x.........?
x.........?
-----------

; x_alive_somewhere(a,b)


Pattern F410c
# evand changed from j to t class. (3.5.2)
# It was causing too many slow moves early.  See nngs4:660

x.........xx
x.........xx
x..........?
x...O.....O.
x.......*...
x...........
x...........
------------

:8,FEdt

x.........cd
x.........ef
x..........?
a...O.....O.
b.......*...
x...........
x...........
------------

; x_alive_somewhere(a,b,c,d,e,f)


Pattern F410d
# gf Revised pattern. (3.3.15)

o......xxx      extend while limiting opponent
oO.....xxx
o...*..xxx
..........
..........
----------

:8,Fedt

o......xxx
oO.....abx
o...*..cdx
..........
..........
----------

; x_alive_somewhere(a,b,c,d)


Pattern F410e

......xxx      extend while limiting opponent
......xxx
O..*..xxx
.........
.........
---------

:8,edt

......xxx
......abx
O..*..cdx
.........
.........
---------

; x_alive_somewhere(a,b,c,d)


Pattern F410f

??..?x?
oO...xx
o..*.xx
......?
......?
-------

:8,ed

??..?x?
oO...ax
o..*.bx
......?
......?
-------

; x_alive_somewhere(a,b)


Pattern F411
# gf Revised pattern. (3.3.17)

.......       extend between two stones on 4-th line
O..*..O
.......
.......
.......
-------

:|,FEd,shape(-2)


Pattern F412

?xX.??       short extension
......
.O.*..
......
......
......
------

:8,FEadj,shape(-1)


Pattern F413

.........      2 space extension is less urgent if both sides are open
.........
....O..*.
.........
.........
---------

:8,F,shape(-5)


Pattern F420

|..........     Take an empty corner in high handicap games ...
|..........
|..*.......
|..........
|...O.....O    
|..........     
|..........     
|..........
+----------

:8,FEt,shape(-2)


Pattern F421

|..........
|..........       ... close that corner so it stays closed ...
|..O.......
|..........
|...O.....O
|...*......
|..........
|..........
+----------

:8,FeEt,shape(-3)


Pattern F423

|.............      ... make an iron pillar ...
|.............
|..O..........
|.............
|...O.....O...
|...O.....*...
|.............
|.............
+-------------

:8,FEt,shape(-3)


Pattern F424

|.............      ... and jump out!
|.............
|..O......*...
|.............
|...O.....O...
|...O.....O...
|.............
|.............
+-------------

:8,FEt,shape(-4)


Pattern F425

xxX......       two space jump
XxOO..*.x
x........
.........
---------

:8,Fj


Pattern F426

xxX..*...        stabilize the side
XxOO....O
x........
.........
---------

:8,Fj


##############################################
# Edge extensions combined with approach moves
##############################################


Pattern F501

X......  make 2 space extension on third row combined with approach move
..*..O.
.......
.......
-------

:8,eadj


Pattern F502

.......  make 2 space extension on third row combined with approach move
X.*..O.
.......
.......
-------

:8,eadt,shape(1)


Pattern F504

xx.....O.
xx.*....O
.........
.........
---------

:8,Feadj

ac.....O.
bd.*....O
.........
.........
---------

; x_alive_somewhere(a,b,c,d)


Pattern F505

.......        extend
.O.....
....*.X
.......
-------

:8,ead,shape(1)


Pattern F506

......     Extend along edge
O..*.X
o....x
......
------

:8,Feadt,shape(1)


#########
# Pincers
#########

Pattern F601

.......         prevent extension
.*..X.O
....XO.
.......
.......
-------

:8,FEaj


Pattern F602

........o      block extension
O.X.*...o
.........
.........
---------

:8,Feaj


Pattern F603

xxx..        time to defend
.....
O.*.O
.....
.....
.....
-----

:8,Fj

abc..
.....
O.*.O
.....
.....
.....
-----

;x_alive_somewhere(a,b,c)


Pattern F604a
#evand new pattern. (3.5.2)
#see nngs4:750

.....o	    pincer a stone against a wall
.....o
.....o
..*.XO
.....o
.....o
------

:8,Fae

.....a
.....b
f....c
e.*.XG
.....o
.....o
------

;o_alive_somewhere(a,b,c) && !omoyo(e) && !omoyo(f) && !weak(G)


Pattern F604b
#evand new pattern. (3.5.2)
#see nngs4:750

.......o	    pincer a stone against a wall
.......o
.......o
...*..XO
.......o
.......o
--------

:8,Fae

.......a
.......b
f......c
e..*..XG
.......o
.......o
--------

;o_alive_somewhere(a,b,c) && !omoyo(e) && !omoyo(f) && !weak(G)


#####################################
# Invasions in the middle of the edge
#####################################

Pattern F701

X.........xx    invade with space to extend in both directions
x....*....xx
............
............
------------

:8,sFIt,shape(1)

X.........ab
x....*....cd
............
............
------------

; x_alive_somewhere(a,b,c,d)


Pattern F702

x.........xx    invade with space to extend in both directions
X....*....xx
............
............
------------

:8,sFIt,shape(1)

x.........ab
X....*....cd
............
............
------------

; x_alive_somewhere(a,b,c,d)


Pattern F703

X.......X    invade
....*....
.........
.........
---------

:8,sFIt


Pattern F704
# gf Added constraint. (3.1.22)
# See nngs:1030.
# evand revised. (3.5.2)
# See nngs4:750

????????
?.....??       invade 4 space extension
.X......
....*.X.
........
........
--------

:8,sFIt,shape(-1)

???c?d??
?.....??
.A......
....*.B.
........
........
--------

;weak(A) || weak(B) || !xmoyo(c) || !xmoyo(d)


Pattern F705

?......?       invade 5 space extension
.X......
...*...X
........
........
--------

:8,sFIt


Pattern F706

O..O..O         respond to an invasion
o..X*..
o......
.......
-------

:8,sFIj


# tm - removed (3.1.20)
# This is almost an antisuji, much less a joseki move!
#Pattern F707
#
#.....         attack to make local shape
#O.X.O
#..*..
#.....
#.....
#-----
#
#:8,FsjE


################
# Jumps
################


Pattern F709
# gf Revised and devalued. See 13x13b:26.

?......      urgent jump
?..*..?
xX....?
x..O..X
x......
.......
-------

:8,Ej


############################################
# Stop edge extensions from corner positions
############################################


Pattern F801

|...X..........    stop wide extension from ikken shimari
|............oo
|...X.....*..oo
|..............
|..............
+--------------

:8,FEj,shape(2)


Pattern F802

|...X..........    stop wide extension from ikken shimari
|.........*..oo
|...X........oo
|..............
|..............
+--------------

:8,FEj,shape(2)


Pattern F803

|..X...........    stop wide extension from kogeima shimari
|............oo
|...X.....*..oo
|..............
|..............
+--------------

:8,FEj,shape(2)


Pattern F804

|..X...........    stop wide extension from kogeima shimari
|.........*..oo
|...X........oo
|..............
|..............
+--------------

:8,FEj,shape(2)


Pattern F805

|..............    stop wide extension from ikken shimari
|..X.X.......oo
|.........*..oo
|..............
|..............
+--------------

:8,FEt,shape(4)


Pattern F806

|..............    stop wide extension from kogeima shimari
|..X.........oo
|....X....*..oo
|..............
|..............
+--------------

:8,FEt,shape(3)


Pattern F807

|...................|      Invade nirensei.
|...................|
|...X.....*.....X...|
|...................|
|...................|
|...................|
+-------------------+

:8,FEj,shape(1)


Pattern F808

|...................|      Invade nirensei.
|...................|
|...X...........X...|
|.........*.........|
|...................|
|...................|
+-------------------+

:8,FEj,shape(1)


Pattern F809

|...X..........    approach shimari and strengthen own stone
|.........o.xxx
|...X..*..o.xxx
|..............
|..............
+--------------

:8,FEj,shape(4)

|...X..........
|.........g.abc
|...X..*..h.def
|..............
|..............
+--------------

;x_alive_somewhere(a,b,c,d,e,f) && o_alive_somewhere(g,h)


Pattern F810

|...X...........    approach shimari and strengthen own stone
|..........o.xxx
|....X..*..o.xxx
|...............
|...............
+---------------

:8,FEj,shape(4)

|...X...........
|..........g.abc
|....X..*..h.def
|...............
|...............
+---------------

;x_alive_somewhere(a,b,c,d,e,f) && o_alive_somewhere(g,h)


Pattern F811

|..............    approach shimari and strengthen own stone
|..X.x......xxx
|....x.*..O.xxx
|..............
|..............
+--------------

:8,FEj,shape(4)

|..............
|..X.g......abc
|....h.*..O.def
|..............
|..............
+--------------

;x_alive_somewhere(a,b,c,d,e,f) && x_alive_somewhere(g,h)


Pattern F812

|..xxx.........xxx..|             wariuchi
|..xxx.........xxx..|
|..xxx.........xxx..|
|..Xxx....*....xxx..|
|...................|
|...................|
+-------------------+

:8,Fj

|..xxx.........xxx..|
|..xxx.........abc..|
|..xxx.........def..|
|..Xxx....*....ghi..|
|...................|
|...................|
+-------------------+

; x_somewhere(a,b,c,d,e,f,g,h,i)


Pattern F813

|..xxx.........xxx..|             wariuchi
|..xxx.........xxx..|
|..xxx.........xxx..|
|..xXx....*....xxx..|
|...................|
|...................|
+-------------------+

:8,Fj

|..xxx.........xxx..|
|..xxx.........abc..|
|..xxx.........def..|
|..xXx....*....ghi..|
|...................|
|...................|
+-------------------+

; x_somewhere(a,b,c,d,e,f,g,h,i)


Pattern F814

|..xxx.........xxx..|             wariuchi
|..xxx.........xxx..|
|..xxx.........xxx..|
|..xxX....*....xxx..|
|...................|
|...................|
+-------------------+

:8,Fj

|..xxx.........xxx..|
|..xxx.........abc..|
|..xxx.........def..|
|..xxX....*....ghi..|
|...................|
|...................|
+-------------------+

; x_somewhere(a,b,c,d,e,f,g,h,i)


Pattern F815

|..xxx.........xxx..|             wariuchi
|..xxx.........xxx..|
|..xXx.........xxx..|
|..xxx....*....xxx..|
|...................|
|...................|
+-------------------+

:8,Fj

|..xxx.........xxx..|
|..xxx.........abc..|
|..xXx.........def..|
|..xxx....*....ghi..|
|...................|
|...................|
+-------------------+

; x_somewhere(a,b,c,d,e,f,g,h,i)


Pattern F816

|..xxx.........xxx..|             wariuchi
|..xxx.........xxx..|
|..xxX.........xxx..|
|..xxx....*....xxx..|
|...................|
|...................|
+-------------------+

:8,Fj

|..xxx.........xxx..|
|..xxx.........abc..|
|..xxX.........def..|
|..xxx....*....ghi..|
|...................|
|...................|
+-------------------+

; x_somewhere(a,b,c,d,e,f,g,h,i)


################
# Miscellaneous
################

Pattern F901

......x     mandatory reinforcement
......x
....*.X
.O..OX.
.......
.......
-------

:8,FEdJ


Pattern F902

......x     mandatory reinforcement
......x
o...*.X
o...OX.
.......
.......
-------

:8,FEdJ

......x
......x
a...*.X
b...OX.
.......
.......
-------

;o_alive_somewhere(a,b)


######################################################################
#
# Joseki patterns.
#
# Corner joseki moves. Notice that the very first approach move in a
# corner is not classified as a joseki move but as a fuseki move.
#
# The bulk of our Joseki patterns are automatically built from
# the files patterns/*.sgf. Sometimes it is easier to add a pattern
# here.
#
######################################################################


Pattern J1

|.....?        hane if attached under hoshi stone
|...O.x
|..*X.?
|.....?
|.....?
+------

:8,sFedJ


Pattern J2

|.......   don't tenuki when star is approached
|...X...
|.......
|...O.*.
|.......
|.......
|.......
+-------

:8,sFadJ


Pattern J3

|....???   don't tenuki when star is approached
|...X...
|.......
|.......
|...O.*.
|.......
|.......
|.......
+-------

:8,sFadJ


Pattern J4

|....???   don't tenuki when star is approached
|..X....
|.......
|..*....
|...O...
|.......
|.......
|.......
+-------

:8,sFadj


Pattern J5

|..X???   defend slide with kosumi
|......
|.X.O.O
|..*...
|......
|......
+------

:8,sFeadJ


Pattern J6

|.......        jump to 3-3
|..O....
|.......
|...X...
|..*..O.
|.......
|.......
+-------

:8,sFeJ


Pattern J7
# gf Made pattern more specific. (3.7.1)
# See trevorc:1180.

|...........       block after 3-3 invasion
|...........
|...O....ooo
|..X*....ooo
|...........
|...........
+-----------

:8,sFedJ

|...........
|...........
|...O....abc
|..X*....def
|...........
|...........
+-----------

;o_somewhere(a,b,c,d,e,f)


Pattern J7b
# gf New pattern. (3.7.1)
# See arend:28.

|..oo.......
|...........
|..X........       block after 3-3 invasion
|...........
|...O....ooo
|..X*....ooo
|...........
|...........
+-----------

:8,sFedJ

|..gh.......
|...........
|..X........
|...........
|...O....abc
|..X*....def
|...........
|...........
+-----------

;o_somewhere(a,b,c,d,e,f) && o_somewhere(g,h)


Pattern J7c
# gf New pattern. (3.7.1)

|..oo.......
|...........
|...........
|..X........       block after 3-3 invasion
|...........
|...O.....oo
|..X*.....oo
|...........
|...........
+-----------

:8,sFedJ

|..ef.......
|...........
|...........
|..X........
|...........
|...O.....ab
|..X*.....cd
|...........
|...........
+-----------

;o_somewhere(a,b,c,d) && o_somewhere(e,f)


Pattern J8

|.....          defend when pressed
|.....
|..*X.
|..O..
|....X
|.....
|.....
+-----

:8,sFedJ


Pattern J9

.X......           follow up the slide with extension
X..O..*.
.O......
........
--------

:8,sFedJ


Pattern J10

|.xxx....???	    cap the kogeima shimari with double wing formation
|.xxx....???
|.xxx....???
|...........
|...........
|...........
|..X.*......
|........xxx
|...X....xxx
|........xxx
|...........
+-----------

:8,sFEj

|.abc....???
|.def....???
|.ghi....???
|...........
|...........
|...........
|..X.*......
|........jkl
|...X....mnp
|........qrs
|...........
+-----------

;x_alive_somewhere(a,b,c,d,e,f,g,h,i) && x_alive_somewhere(j,k,l,m,n,p,q,r,s)


Pattern J11

|.....      defend san san
|.....
|..*X.
|..Ox.
|.....
|.....
+-----

:8,sFedJ


Pattern J12

|.......        attach at 3-3 point
|.......
|..X.O..
|..*....
|.......
|.......
+-------

:8,sFedJ


Pattern J13

|.......        defend at 3-3
|..X....
|.......
|.X.O...
|..*..O.
|.......
|.......
+-------

:8,sFedJ


Pattern J14

|.......   Joseki move
|.......
|.......
|...*...
|..O....
|....X..
|.......
|.......
+-------

:8,sFEadj


Pattern J15

|.......   Joseki move
|.......
|...*...
|.......
|..O....
|....X..
|.......
|.......
+-------

:8,sFEdj


Pattern J16

|.......   Joseki move
|.......
|.......
|.......
|..O.*..
|....X..
|.......
|.......
+-------

:8,sFEdj


Pattern J17

|..........   Joseki move
|..........
|..........
|..O......o
|....X.*..o
|..........
|..........
+----------

:8,FEaj


Pattern J18
# pincer or attachment below X might be best in many cases

|...X..             follow up the slide by taking the corner
|..*..O
|...O..
|......
+------

:8,Fedj,shape(-1)


Pattern J19

|.........    joseki move
|...X*XO..
|.....OX..
|.........
|.........
+---------

:8,Fadj,shape(5)


Pattern J20

|.xx?????      make life in the corner
|.Xx?????
|.OXXxx??
|.OOOX...
|....*...
|........
+--------

:8,FedJ


Pattern J21

|..X.??          sente and not aji keshi
|......
|...X*.
|..XO.O
|..XO..
|......
+------

:8,FEdj


Pattern J22

|.xX.??          sente and not aji keshi
|......
|...X*.
|..XO.O
|..XOO.
|...X..
+------

:8,FEdj


Pattern J23

|..X.       both attack and defense          
|....
|.X.O
|.*O.
|....
|....
+----

:8,Fead,shape(2)


Pattern J24

|..X.X...     knight's move to defend
|.....*..
|...O....
|........
|........
+--------

:8,FJ


Pattern J25

|..O.O...     enclose the opponent
|........
|...X.*..
|........
|........
|........
+--------

:8,FJ,value(30)


Pattern J26

|..X.X...     don't get enclosed!
|........
|...O.*..
|........
|........
|........
+--------

:8,FJ,value(30)


Pattern J27

|..X.???      limit X to small life in corner
|....???
|..*O.??
|..XO.??
|.......
|.......
+-------

:8,FU

|..X.???
|....???
|..*O.ab
|..XO.cd
|.......
|.......
+-------

; x_alive_somewhere(a,b,c,d)


Pattern J28

|..X.....
|........
|..*..???
|...O.???
|........
|........
+--------

:8,FJ

|..X.....
|........
|..*..abc
|...O.def
|........
|........
+--------

; x_alive_somewhere(a,b,c,d,e,f)


Pattern J29
# The owl code should be able to read this out correctly now.

|.xx???           Defend correctly (leaves ko)
|.Xx???
|.OXX??
|.OOX??
|...OXx
|..*...
+------

:8,F,value(35)

|.xx???
|.Xx???
|.OXX??
|.OOX??
|..aOXx
|..*...
+------

> antisuji(a);


Pattern J30

?.....         block before cutting
?..O..
?O.OX.
..*X..
......
......
------

:8,FadJ

?.....
?..O..
?O.OX.
..*Xa.
......
......
------

> antisuji(a)


Pattern J31

|...X.....          make bamboo joint
|...*.O...
|...O.OX..
|...OXX...
|.........
|.........
+---------

:8,FU


Pattern J32

|..X......          take corner to secure group when pressed
|.........
|.X.O.....
|.*O..O.X.
|.........
|.........
+---------

:8,FJ


Pattern J33

|..X....
|...X...
|..XO*..
|..O..oo
|.......
|.......
+-------

:8,FJ

|..X....
|...X...
|..XO*..
|..O..ab
|.......
|.......
+-------

; o_alive_somewhere(a,b)


Pattern J34

|..X....         atari first
|...X...
|.*XO.O.
|..O....
|.......
|.......
+-------

:8,FJ


Pattern J35

|..X....        connect for safety
|.xxX...
|.OXO.O.
|..O*...
|.......
|.......
+-------

:8,FJ


Pattern J36

|..oo?      large!
|...o?
|...O?
|..OXX
|..*..
|.....
+-----

:8,Fadj


Pattern J37

|..oo??       seal the corner
|...O??
|....*X
|....OX
|......
+------

:8,Ft

|..oo??
|...O??
|....*X
|....OX
|.....a
+------

> antisuji(a)


Pattern J38

|......         atari to build up the top
|....*.
|..OOX.
|..OXO.
|..XX..

:8,FJ


Pattern J39

|.......        push again to build up the top
|....O*.
|..OOXX.
|..OXO..
|..XX...

:8,Fj


Pattern J40
# db added (3.1.4)

|..Xx.....
|..o....x.       seal the side      
|..oO.O...
|..o..*.X.
|.........
|.........
+---------

:8,FJ


Pattern J41
# db added (3.3.3)
# see nngs1:48

|......          Play the Joseki!
|......
|..*X..
|..OX.O
|......
|......
+------

:8,J

|......
|.....a
|..*X..
|..OX.O
|......
|......
+------

> replace(a,*)


Pattern J42
# db added (3.3.6)
# see strategy5:17

|...XX??          attack positively
|....OO.
|..O....
|.......
|.......
|..X....
|...*...
|..O....
|.......

:8,j

|...XX??
|....OO.
|..O....
|.......
|.......
|..X....
|.a.*...
|..O....
|.......

> replace(a,*)


Pattern J43
# db added (3.3.6)

+-------        attach to defend cut
|.......
|.......
|..*XX.X
|....OO.
|..O....
|...xxxx
|...????

:8,J

+-------
|.......
|.......
|..*XX.X
|....OO.
|..O....
|...abcd
|...efgh

; x_alive_somewhere(a,b,c,d,e,f,g,h)

> replace(c,*);
> replace(d,*)


Pattern J44
# added 3.3.12 evand

?O....??         fixing this defect is often urgent
XO.*..??
xXO...??
xx....??
--------

:8,j

?O...ab?
XO.*..??
xcO...??
xx....??
--------

; (!omoyo(a) || !omoyo(b)) && !attack(c)


Pattern J45
# added 3.3.12 evand

???.....???          develop the side
??o......??
?oO........
oO.....*...
...........
...........
-----------

:8,j


Pattern J46
# nn added 3.3.14

------+            needed generalization of a hoshi.db pattern
?.....|
?.....|
?.....|
?.X...|
...X..|
.*XO..|
..O...|
......|

:8,Jad


Pattern J47
# db added (3.3.14)

+-------        general hanetsugi
|.......
|...*...
|..OX.O.
|..OX.??
|..ox.??
|..??...

:8,J


Pattern J47b
# db added (3.3.14)

+-------        general hanetsugi
|.......
|..*OX..
|..OX.O.
|..OX.??
|..ox.??
|..??...

:8,J


Pattern J48
# db added (3.3.14)

+--------        stabilize the corner
|........
|..O.*...
|..XO....
|..X.....
|...X....

:8,J


# END OF FILE