(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[baduk]PB[movies]
;B[qd]
;W[dd]
;B[pp]
;W[dp]
;B[fc]
;W[cf]
;B[kc]C[The formation at the top is called the mini Chinese opening.]
;W[hc]C[This invasion point will become big soon in the opening. ]
(;B[fe]C[When black wants to fight, black can jump here. But white has a trick up his sleeve!]
;W[ec]LB[db:A]C[White can play this kosumi to test black's reaction. And prevent the previous shown keima of black at A]
(;B[fb]C[If black wants to prevent white from connecting, black normally extends onto the second line.]
;W[he]C[White jumps! White has a secret aim..]
;B[fg]C[When black jumps again, white has a special tesuji, which is the topic of this episode.]
(;W[jc]LB[fd:B][kd:A]C[This is a great attaching tesuji to settle your weak group. It makes miai of making great shape with A afterwards, or aiming for a severe cut at B.]
(;B[ed]C[When black prevents the cut, white is satisfied.]
;W[ee]C[locally this is a bit crude, but white wants to take sente.]
;B[fd]
;W[kd]C[White makes great shape at the top.]
;B[dc]C[Black can take this stone, but it is not a big deal.]
;W[cc]
;B[db]
;W[cd]C[White feels better. His corner was damaged a little, but he gained a lot at the top.])
(;B[jd]C[If black wants to prevent white from playing hane, black can try this.]
;W[id]
;B[jb]
;W[ic]
(;B[kd]
;W[fd]C[However, this wedge still works.]
;B[gd]
;W[ed]LB[gc:A][ge:B]C[Cutting at A or at B is miai.])
(;B[ed]
;W[ee]
;B[fd]
;W[kd]C[Also a good result for white.]))
(;B[kd]C[A simple extension is more scary than you think.]
(;W[fd]C[White can not cut immediately]
;B[gd]
;W[ed]
;B[gc]
;W[ge]
;B[hd]
;W[id]C[This is too dangerous. Black can cut!]
(;B[hb]
;W[ie]
;B[jb]
;W[ff]C[White gets thick but black has sente. This is a bit better for black])
(;B[ie]C[black can cut]
;W[if]
;B[je]
;W[hb]C[Black is not bad but he has been captured]
;B[hf]
;W[gf]
;B[hg]
;W[ff]
;B[ef]
;W[ee]
;B[gg]
;W[fe]LB[jb:C][cc:A][cd:B]C[Black squeezes afterwards black can choose to poke around in the corner At A or B or play the big sente move at C. This is great for black.]))
(;W[jd]C[White can not cut at A immediately, so pushes up here first.]
;B[ed]C[Black has to prevent the cut now]
;W[ee]
;B[fd]
;W[ke]C[White gets to play hane on top of two stones, which is a bit painful for black.]
;B[md]
;W[le]
;B[nd]
;W[dc]C[White is not bad at all.])))
(;W[ke]C[This move is not as tricky as the attachment, but is played more often.]
;B[dh]C[Black gets to put good pressure on the corner though.]
;W[bh]
;B[cc]
(;W[dc]C[This is an overplay]
;B[cd]C[Because black got so strong on the outside white can not block]
(;W[ce]
;B[de]LB[dh:A]C[Black can cut. A helps a lot in this fight])
(;W[de]C[White will need to give in, and black steals white corner away easily]))
(;W[cd]LB[db:B][dc:A]C[White will have to block here. Black can leave the situation and connect at A or B later])))
(;B[gc]LB[fd:A]C[Because of the cutting weakness at A. Black often plays here. This is a bit painful though]
;W[hd]C[White is happy to go up like this]
;B[gf]
;W[hf]
;B[hg]
;W[if]
;B[gh]C[Something like this.]))
(;B[cc]C[Possible but not played often. See the game between Lee Sedol and Lee Changho in the bonus tab.]
;W[dc]
;B[db]
;W[eb]
;B[cb]
;W[ec]
;B[be]
;W[bf]
;B[ce]
;W[de]
;B[cd]
;W[fd])
(;B[db]C[Another approach, ]
;W[fd]
;B[ec]
;W[gd]
;B[cc]
;W[nd]C[White takes sente and invades])
(;B[dc]C[Also played sometimes]
;W[cc]
(;B[cb]C[Either here..])
(;B[ed]C[Or here if you think you have enough ko threats]
;W[db]
;B[eb])))