(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[White]PB[Black]C[Hi all, and welcome to this screencast.
In this screencast we would like to show a favourite trick play of Peter.
You might think: "What? A Trick play? Trick plays are only for bad people and have no place in a beautiful game like go!" But studying them can actually do no harm and can teach you things about joseki, shape and fighting spirit. One of our favourite go books is called "A compendium of trick plays" published by the Nihon Kiin and Yutopian in 1995. A quote from it: "If joseki can be said to be the highway, trick plays may be called a back alley. When one masters the alleyways, one is on course to master joseki."
]
(;B[pe]
;W[pc]
;B[nd]
;W[qe]C[This trick play starts of with a normal 5-4 joseki. Normally the joseki goes like this:]
(;B[qf]C[The normal move.]
;W[qd]
(;B[pf]LB[nb:A][pg:B]C[White often plays elsewhere (tenuki), but the local continuation is at A.

Here black can also choose to play another variation at B. ]
;W[nb]
;B[pj]LB[qj:A]C[This is a joseki (black can also choose to play A in stead of Q10). But instead of this normal sequence, black tries something else.])
(;B[pg]
;W[nb]LB[qk:A]C[Again O18 is optional. 
Another straightforward joseki. 

The local shape continuation for black is at A.]
;B[qk]))
(;B[pf]C[This is the beginning of the trick play.
It looks calm, but looks can be deceiving!]
(;W[qd]C[To start with: The correct answer for white.]
(;B[qf]C[We can return to joseki if we like. So this trick play has no negative consequences for black. It can even be said to be more flexible than the standard joseki, because..

.. instead of R14 black can also choose tenuki!]
;W[nb]
;B[pj])
(;B[dd]C[Playing elsewhere (tenuki) is a fine and interesting move. 
A great example of this idea can be seen in a professional game between Lee SeDol 9p and Hane Naoki 9p, from 2004 (see bonus .sgf file).]))
(;W[qf]C[White can not play here, he is tricked already.]
;B[qd]C[Black makes a severe hane on the inside..]
;W[pd]
;B[rd]
;W[qg]
;B[qb]
;W[pb]
;B[qc]
;W[mc]C[White tries to escape..]
;B[pg]C[Sente.]
;W[qh]
;B[nc]
;W[nb]
(;B[mb]C[But he can still be cut.]
;W[lb]
;B[ob]
;W[ma]
;B[oa]C[Good for black! Black captures three stones and is left with a solid position and profit. White still has to settle his two groups.]
;W[ph]
;B[nf])
(;B[ob]LB[mb:A]C[A final note: The previous variation is good enough for black. However, the book "A compendium of trick plays" also mentions this possibilty. If the ladder is good for black he can consider to cut here instead of the cut a A. This is very complicated.]
;W[oc]
;B[mb]
;W[oa]
;B[lc]C[The general idea.]
;W[oe]LB[qa:A]C[What will happen now is not sure. White has huge aji: seemingly a ko at A and good chances to get out in the center. A shortage of liberties for black makes it dangerous: If you like fighting, this might be worth a try. Let us know how it went :)]))
(;W[pd]C[Another response for white, leading into a better position for black.]
;B[qf]
;W[re]
;B[rf]
;W[nb]
;B[rc]C[Tesuji.]
;W[qd]
;B[mc]LB[se:A]C[Good for black! Black has aji left in the corner, and big sente endgame at A.])))
(;B[dp]
;W[pc]
;B[pe]C[If white plays tenuki..]
(;W[pq]
;B[nd]LB[pe:A]C[We return to the joseki shown before. This is probably a more usual way to enter this joseki (few people start on the 5-4 point, A).])
(;W[qe]C[White can of course also respond in the corner, which leads to one of the most standard josekis in go (which is very similar to the 5-4 joseki just shown).]
;B[qf]
;W[qd]
(;B[pf]
;W[nc]
;B[qj])
(;B[pg]
;W[nc]
;B[qk]))))
