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.

(;GM[1]FF[3]
SZ[19]HA[0]
GN[Hoshi+other joseki database]
;B[pd]
(;B[pj];C[#kosumi tsuke for 6-9 stone games]PL[W]
(;W[qf]PL[B]
(;B[qe]MA[mk]
(;W[pf]C[S]MA[mi]
(;B[nd]MA[mk]C[U]PL[W];W[ph]C[j];B[re]MA[lk]C[j])

(;B[tt];W[od]MA[mi];B[oc];W[nd]TR[mi];B[nc];W[pc]MA[mi];B[qc];W[pb]
MA[mi];B[qb];W[pe]MA[mi];B[qd])
)

(;W[oe]
(;B[od]MA[lk])

(;B[pf]C[0
# playable if ladder works but dangerous for GNU Go
]MA[mh])
)
)

(;B[qh]C[j
]MA[nl])
)

(;W[pg];B[nd];W[ld];B[nf];W[oe];B[od]MA[ki])

(;W[qg]
(;B[qe]MA[ml]C[j
:-,shape(0.015)
])

(;B[nc]MA[ll]C[j
])

(;B[mc]MA[kl]C[j
])

(;B[nd]MA[mk]C[j
:-,shape(-0.02)
])

(;B[jj]PL[B];B[jd]PL[B];B[og]MA[ik]C[j
:-,shape(-0.02)
])

(;B[md]MA[mj]C[0
])
)
)

(;B[qg]C[0];C[#17 stone concrete];B[pj]C[0]
(;W[re]MA[ok]C[0];B[qe]MA[ok];W[pc]MA[ok]C[0];B[qd]MA[ok])

(;W[qf]MA[ok]C[0];B[pg]MA[ok]C[U])

(;W[pe]MA[ok]C[0];B[qd]MA[ok]C[U])

(;W[qd]MA[ok]C[0];B[qe]MA[ok]C[U];W[re]MA[ok]C[0];B[pe]MA[ok]C[U];
W[rd]MA[ok]C[0];B[rf]MA[ok]C[U];W[pc]MA[ok]C[0];B[oc]MA[ok]C[U];W[pb]
MA[ok]C[0];B[ob]MA[ok]C[U];W[rb]MA[ok]C[0])

(;W[qc]MA[ok]C[0];C[#sansan inv];B[pc]MA[ok]C[U];W[qd]MA[ok]C[0];B[qb]
MA[ok]C[U]
(;W[qf]MA[ok]C[0];B[pf]MA[ok]C[U];W[qe]MA[ok]C[0];B[pg]MA[ok]C[U];
W[rb]MA[ok]C[0];B[pb]MA[ok]C[U];W[rg]MA[ok]C[0];B[rh]MA[ok]C[U];W[sg]
MA[ok]C[0])

(;W[rb]MA[ok]C[0];B[pb]MA[ok]C[U];W[qf]MA[ok]C[0];B[pf]MA[ok]C[U];
W[qe]MA[ok]C[0];B[rg]MA[ok]C[U]
(;W[ra]MA[ok]C[0];B[sd]MA[ok]C[U])

(;W[rf]MA[ok]C[0];B[ra]MA[ok]C[U])
)
)
)

(;W[pf]
(;B[nd]MA[lh]C[S]
(;W[qd]MA[mg]C[S];B[qc]MA[mg]C[S];W[qe]MA[mg]C[S];B[rc]MA[mg]C[S];
W[qj]MA[ml]C[S];B[jc]MA[ig]C[S])

(;W[qc]C[0];B[qd]MA[mg]C[S])

(;W[pj]C[j
]MA[nl];B[qf]MA[lh]C[t
];W[qg]MA[lk]C[S];B[qe]MA[lh]C[S];
W[pg]MA[lk]C[S])
)

(;B[tt];W[nd]
C[j
#applicable in isolation or if b makes a pincer on the right
]
MA[jg]
(;B[oe]MA[mg];W[qc]MA[mg];B[qd]MA[jg];W[pc]MA[jg];B[of]MA[jh];W[od]
MA[jg];B[pg]MA[ji])

(;B[pc]C[j
]MA[mg];W[nf]MA[lh];B[nb]MA[lh])

(;B[qc]MA[mg]C[j
];W[nf]MA[lh])
)

(;B[nc]C[0
#no reason not to answer at O16
]MA[lh]
(;W[qd]MA[lh];B[qc]MA[lh];W[qe]MA[lh];B[rc]MA[lh];W[qj]MA[ll])

(;W[pj]C[j
]MA[kl];B[qf]MA[kh];W[qg]MA[kh];B[qe]MA[kh];W[pg]MA[kh])
)
)

(;W[qc];B[qd];W[pc]C[S]MA[nf];B[oc]MA[nf]C[S]
(;W[ob]MA[nf]C[S];B[nc]MA[mf]C[S];W[nb]MA[mf]C[S];B[mc]MA[lf]C[S];
W[rd]MA[nf]C[S];B[re]MA[ng]C[S];W[rc]MA[nf]C[S];B[qf]MA[mg]C[S])

(;W[rd]C[#Not joseki
]
(;B[re]MA[nf]C[S];W[rc]MA[nf]C[S]
(;B[qf]C[j
]MA[ng];W[ob]MA[nf]C[S];B[nc]MA[mf]C[S];W[nb]MA[mf]C[S];
B[mc]MA[lf]C[S])

(;B[od]C[#depending on circumstances, P18 might be possible ?
S
]
MA[mg])
)

(;B[od]MA[nf]C[0
])
)
)

(;W[qe];B[qd]MA[mg]
(;W[pe];B[oe]MA[mh]
(;W[od];B[re]MA[lh];W[rf];B[rd]MA[mh])

(;W[of];B[ne]MA[lh])
)

(;W[rd];B[pe]MA[mh]
(;W[qf];B[rc]MA[ng])

(;W[rc];B[qf]MA[nh];W[re];B[pf]MA[mi])
)
)

(;W[tt]
(;B[md];W[qc];B[qd]MA[mf]C[S];W[pc]MA[mf]C[S];B[oc]MA[mf]C[S];W[ob]
MA[mf]C[S];B[nc]MA[mf]C[S];W[rd]MA[mf]C[S];B[re]MA[mg]C[S];W[rc]MA[mf]
C[S];B[qf]C[S])

(;B[nc]
(;W[qc];B[qd]MA[nf]C[S];W[pc];B[oc]MA[nf]C[S];W[rd];B[re]MA[ng]C[S];
W[rc];B[qf]MA[ng]C[S])

(;W[rd]
(;B[qe]MA[mh])

(;B[qc]MA[lg])
)
)

(;B[mc];W[qc];B[qd]MA[mf]C[S];W[pc]C[S]MA[mf];B[oc]C[S]MA[mf];W[ob]
C[S]MA[mf];B[nb]C[S]MA[mf];W[od]C[S]MA[mf];B[nc]C[S]MA[mf];W[rd]C[S]
MA[mf];B[re]C[S]MA[mf];W[rc]C[S]MA[mf];B[qf]C[S]MA[mg]
(;W[pa]C[S]MA[mf];B[oe]C[S]MA[mf])

(;W[pb]C[S]MA[mf];B[oe]C[S]MA[mf])
)
)

(;W[pe];B[od]MA[lh];W[qd];B[qc]MA[mh])

(;W[pg]C[j
]MA[li];B[nd]MA[li]
(;W[qd]MA[li]
(;B[qc]MA[li]
(;W[qe]MA[li];B[rc]MA[li];W[pe]MA[li];B[od]MA[li];W[qk]MA[ll];B[jc]
MA[hi])

(;W[pe]MA[li];B[od]MA[li];W[re]MA[li];B[rc]MA[li];W[qk]MA[lm];B[jc]
MA[hi])

(;W[rc]MA[li]
(;B[pc]MA[li];W[qe]MA[li];B[rb]MA[li];W[qk]MA[lm];B[jc]MA[hi])

(;B[qe]MA[li];W[rd]MA[li];B[pc]MA[li];W[pe]MA[li]
(;B[pf]MA[li];W[oe]MA[li];B[qg]MA[li];W[of]MA[li];B[qf]MA[li];W[ph]
MA[li];B[ri]MA[lk];W[od]MA[lj];B[oc]MA[lj];W[nc]MA[kj];B[nb]MA[kj];
W[mc]MA[kj];B[mb]MA[jj];W[lc]MA[jj];B[rb]MA[kj])

(;B[oe]MA[li];W[pf]MA[li];B[rb]MA[li]
(;W[re]MA[li])

(;W[sb]C[0
]MA[li];B[re]MA[li];W[qb]MA[li];B[ra]MA[li])
)
)
)
)

(;B[qe]MA[li];W[pe]MA[li];B[re]MA[li]
(;W[rd]MA[li];B[rg]MA[li];W[pc]MA[li];B[od]MA[li];W[ob]MA[li];B[nb]
MA[li]
(;W[rb]MA[li];B[pf]MA[li])

(;W[pf];B[qc]MA[li];W[rc];B[qb]MA[li];W[rb];B[pb]MA[li];W[qa];B[oc]
MA[li]
(;W[rh];B[qh]MA[li];W[rf];B[ri]MA[li];W[qf];B[pk]MA[lm])

(;W[rf];B[qf]MA[li];W[qg];B[sf]MA[li];W[rh];B[ri]MA[lk];W[sd];B[se]
MA[lk];W[qh];B[sh]MA[lk];W[qj];B[sb]MA[lk])
)
)

(;W[pc]MA[li]C[0
];B[od]MA[li];W[rc];B[pf]MA[li];W[nb]
(;B[og]MA[li]C[j
])

(;B[mb]MA[ki]
(;W[ob];B[qb]MA[ki]
(;W[rb];B[nc]MA[ki];W[qc];B[lc]MA[ki])

(;W[qc];B[mc]MA[ki];W[rb])
)

(;W[mc]C[0
];B[ob]MA[ki];W[lb];B[oc]MA[ki])
)
)
)
)

(;W[qk]MA[km]C[j
];B[jc]MA[hl]C[j
])
)

)