(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[vhjfeifjvn ]PB[paK0666 ]WR[17k]BR[17k]PC[Tygem Baduk]RE[W+43.50]
;B[pd]
;W[pp]
;B[dd]
;W[dp]C[Double Nirensei

I am not overly familiar with the professional plays in this opening, but I know it is played by professionals. So far so good.]
;B[qn]C[This seems like the best move on the board.]
;W[qo]C[This move is unusual here.]
;B[pn]
;W[nq]TR[pn][qo]C[Overall, this exchange is bad for white. He should have played O3 directly.]
;B[qj]TR[pj]C[This could also be high to give you more potential on the left. I think either is fine.]
;W[fc]
(;B[cf]C[I am always a fan of playing the calm move, but I wonder if a pincer might be better here.]
;W[db]
;B[cc]
;W[ic]
;B[fq]C[I'm not sure where the best place to play is. This move seems fine.]
;W[hq]C[I'm not a huge fan of this pincer considering that white is low on the right and the D4 stone isn't all that strong.]
;B[cq]C[This seems reasonable]
;W[dq]
;B[cp]
;W[co]C[This is not reasonable.]
(;B[cr]C[Nice. You know this trick.]
(;W[dr]C[Oh dear...]
;B[do]
;W[fp]
;B[eo]C[Nice move. This takes the shape point for white and his only connection is an empty triangle]
;W[ep]
;B[cn]
;W[cm]C[This clamp is bad. White has placed a stone touching something one move from becoming a ponnuki with a black group on the other side.]
;B[bo]
;W[ck]C[This connection is horrible. Heavy. Small. There is nothing good about what white is doing here.]
;B[ci]C[Good. Now white must run. Locally he doesn't even have 1 eye.]
;W[cb]C[Tenuki here is unthinkable. This move is small potatoes comared to what is happening on the left. 

Punish now.]
(;B[bc]C[Locally this is not a good response.]
;W[el]C[Well, white had time to save himself, but his group is still weak. 

Black can attack for nice profit.]
(;B[nc]C[This move is small compared to the attack. Otherwise it's a decent move.]
(;W[qc]C[This move is a mistake.]
;B[qd]
;W[rd]
;B[re]
;W[pc]C[This is unusual.]
(;B[rc]C[I don't like the timing of this.]
;W[oc]
;B[od]
;W[nb]
;B[mc]
;W[rb]
;B[sd]
;W[mb]
;B[lc]C[This result is okay, but black could do better.]
;W[ph]TR[ld][le][mf][mg][mh][ni][nj][ok][ol][om]C[This move is insane. Black's wall is very thick. A reduction move would need to be along the sector line.]
(;B[oi]C[Don't touch this stone - should hit counts as touching.]
;W[ng]C[Now white can get out.]
(;B[oh]C[Cut the knight's move on the far side.]
;W[og]
;B[pg]
;W[pf]
;B[qg]
;W[ne]C[This is a nice move by white. Fixes the cut in sente.]
;B[nd]
;W[rl]C[Also insane]
;B[rn]C[Good. Now you are threatening an unstoppable invasion of the corner.]
;W[qk]
(;B[pj]C[This move removes all aji of the white stone at Q12, but is the really needed?]
;W[ok]TR[pg][qg][oh][oi][pj][qj]C[After your solid extension this group is very strong - that is the only reason to play a move like Q10. What this means going forward is that the idea here should be an attack on white's weak group by leveraging your strong one.]
(;B[pk]C[This is a mistake as you discovered.]
;W[pl]
;B[ol]
;W[om]
;B[nl]
;W[pm]
;B[on]
;W[nm]
;B[nn]
;W[ml]
;B[nk]
;W[mk]
(;B[oj]
(;W[mn]
;B[rp]C[From here many things happen. Black's result is okay, but white is much better off than he needed to be.

End of comments.]
;W[ro]
;B[qq]
;W[qp]
;B[pq]
;W[oq]
;B[or]
;W[rq]
;B[rr]
;W[sp]
;B[nr]
;W[sr]
;B[qr]
;W[ps]
;B[mq]
;W[mr]
;B[lr]
;W[pr]
;B[ms]
;W[rs]
;B[np]
;W[op]
;B[mo]
;W[lp]
;B[mp]
;W[oo]
;B[kp]
;W[no]
;B[lo]
;W[di]
;B[ch]
;W[dh]
;B[mj]
;W[rj]
;B[ri]
;W[qf]
;B[rf]
;W[rh]
;B[qi]
;W[qh]
;B[rg]
;W[si]
;B[sg]
;W[sh]
;B[mi]
;W[jq]
;B[kq]
;W[cj]
;B[os]
;W[qs]
;B[lb]
;W[sb]
;B[sc]
;W[lg]
;B[kj]
;W[lk]
;B[ki]
;W[jl]
;B[oe]
;W[of]
;B[mf]
;W[lf]
;B[mg]
;W[me]
;B[mh]
;W[le]
;B[nf]
;W[jd]
;B[pb]
;W[qb]
;B[na]
;W[oa]
;B[la]
;W[ma]
;B[ia]
;W[ja]
;B[jb]
;W[ib]
;B[ha]
;W[gf]
;B[fa]
;W[cg]
;B[bg]
;W[dg]
;B[bh]
;W[ih]
;B[ij]
;W[ln]
;B[ko]
;W[jr]
;B[kr]
;W[hi]
;B[ee]
;W[fe]
;B[ef]
;W[gb]
;B[ga]
;W[ec]
;B[bb]
;W[hk]
;B[hj]
;W[gj]
;B[gi]
;W[gh]
;B[fi]
;W[fj]
;B[fh]
;W[fg]
;B[gk]
;W[ik]
;B[jk]
;W[kk]
;B[jj]
;W[gl]
;B[hl]
;W[il]
;B[hm]
;W[fk]
;B[in]
;W[io]
;B[jn]
;W[jo]
;B[kn]
;W[km]
;B[ho]
;W[hp]
;B[jp]
;W[ip]
;B[jh]
;W[ig]
;B[jg]
;W[jf]
;B[ii]
;W[hh]
;B[if]
;W[ie]
;B[kf]
;W[je]
;B[ke]
;W[kd]
;B[kg]
;W[ld]
;B[bj]
;W[bk]
;B[aj]
;W[cs]
;B[bs]
;W[ds]
;B[ar]
;W[bm]
;B[df]
;W[ff]
;B[eg]
;W[eh]
;B[js]
;W[ir]
;B[is]
;W[hs]
;B[ks]
;W[go]
;B[hn]
;W[fm]
;B[jm]
;W[lm]
;B[dm]
;W[dl]
;B[em]
;W[en]
;B[dn]
;W[fn]
;B[bn]
;W[hb]
;B[ka]
;W[ba]
;B[ab]
;W[lh]
;B[li]
;W[kh]
;B[ji]
;W[an]
;B[ao]
;W[am]
;B[ak]
;W[ed]
;B[dc]
;W[ea]
;B[da]
;W[ca]
;B[fb]
;W[eb]
;B[ja]
;W[al]
;B[bf]
;W[sj]
;B[kc]
;W[jc]
;B[fo]
;W[gn])
(;W[nj]C[Atari]))
(;B[nj]C[Much better shape]))
(;B[nm]C[This move threatens the cut while attacking.]
(;W[mk]C[If white comes out.]
(;B[ll])
(;B[pk]
;W[pl]
;B[ol]C[Now the cut works.]
;W[om]C[And this fails.]
;B[nl]
;W[pm]
;B[on]
;W[nn]
;B[ql]
;W[qm]
;B[rm]
;W[ql]
;B[rk]))
(;W[ol]C[If white defends his shape...]
;B[lm]C[You can escape and threaten to surround.]
;W[mk]C[White comes out.]
;B[kk]LB[ok:A][el:B]C[Now this move is a double attack (splitting attack) against the A group and the B group from earlier.

The following is an example. Expect none of the moves to be the best move, but it will show you the basic idea of a splitting attack.]
;W[mi]C[White connects.]
;B[gn]C[Black threatens to surround white while also helping his weak group.]
;W[gl]C[White comes out.]
;B[im]C[Black keeps up his knight move attack, this also lets his group escape. The escape of this group is already some profit from the attack. But there is more.]
;W[fi]C[White makes shape.]
;B[fg]C[Black threatens to surround.]
;W[ij]C[White tries to come out.]
;B[ki]LB[lf:B][ih:A]C[Another double purpose move. This one threatens to surround at A or B. Neither group has two eyes. If they get surrounded they die. But white can only help one.

That is the idea of a large scale splitting attack.])))
(;B[ol]C[Why not this move? Try to keep your stones connected.]))
(;B[og]
;W[oh]
;B[nh]TR[og]C[You have the ladder to save this stone.]))
(;B[ni]C[This is the move to push white into your wall of doom.]))
(;B[oc]C[Hane at the head of two stones.]
(;W[rc]C[If white connects]
;B[pb]
;W[qb]
;B[ob]C[This is dead.]
;W[sb]
;B[ra]LB[qa:B][sd:A]C[Miai for killing])
(;W[ob]C[If white hanes.]
;B[nb]C[Black can just seal white in.]
;W[rb]
;B[qa]C[Then black has this cool move.]
(;W[pa]
;B[sd]
;W[sb]
;B[ra]
;W[qb]
;B[na]LB[pb:A][rc:B]C[This is dead. White cannot connect to get a second eye at A and the eye at B is false.])
(;W[sc]C[White can play this, however.]
;B[pb]C[But black can back off and be satisifed.]
;W[qb]
;B[oa]
;W[ra]
;B[se]
;W[sd]C[Totally sealed in with 2.5 points in gote. This reasult is amazingly good for black. This thickness will also help you with your attack in the lower left.]))))
(;W[rd]LB[qc:A][qg:B]C[White wants to invade here. This has miai for the corner or the side.]))
(;B[gn]C[This move cannot be cut off and threatens to begin reducing the bottom while also attacking.]
;W[gl]
;B[in]C[Does white defend his points on the bottom or make shape?]
(;W[fi]
;B[jq]TR[dp][ep][fp][dq][hq][dr]C[Note that this white group is not 100% alive. If black surround this white will lose all his points on the bottom and black has an insanely easy win.])
(;W[jp]
;B[il]
;W[fi]
;B[hd]C[This is a leaning attack move.]
;W[hc]C[Here is the common continuation.]
;B[fd]
;W[gd]
;B[ge]
;W[gc]
;B[he]C[White is surrounded.])))
(;B[ek]C[Where will white go?]
(;W[dj]
;B[fi]C[Where does white run?])
(;W[bc]C[If white does this...]
;B[bd]
;W[dc]
;B[cd]TR[bb]C[Connecting is gote, but that is so small it is unthinkable. So black has a decent endgame move for later and white still has to worry about his all but dead group toward the bottom - not to mention the moves in the top left are only helping to strengthen black.]))
(;B[bb]C[This is the move if you want to play over here. However, where you want to play is in the F9 area.]))
(;W[do]TR[cf]C[White must connect, but this is bad direction considering the stone at C14]
;B[dr]
;W[eq]
;B[er]
;W[fp]
;B[fr]
;W[gp]C[White can play like this to get thickness toward the left, but that thickness is mostly useless on this board. White wants a wall toward the bottom.]))
(;B[dr]C[Another way to punish is here. You'd need to play this way if white could use his thickness after connecting at D5.]
;W[er]
;B[cr]
;W[eq]
;B[cn]C[This clamp is painful. White must connect back.]
;W[do]
;B[bo]C[White has lost a liberty on his group and taken away most of black's aji in the area for nothing.

Compare this to the regular joseki...]
;AE[bo][co]C[It doesn't look much different, but this result is far better for white.]))
(;B[hc]
(;W[cc]C[If white goes for the corner]
;B[dc]
;W[cd]
;B[de]
;W[db]
;B[eb]
;W[cb]
;B[ec]
;W[cf]
;B[eg]C[For example: The result would be great for black.])
(;W[fe]C[If white jumps]
;B[cf]TR[pj]C[You can still play this move. White is unsettled and H17 has the support of Q16. However, if this happened I would really prefer R10 to be high so that any influence white might get is minimized some.]
;W[id]
;B[ic]
;W[jd]
;B[hd]
;W[he]
;B[jc]
;W[kd]
;B[lc]
;W[ld]
;B[mc]LB[qc:A][gd:D][ne:C][oj:B][cn:E]C[This is a normal continuation - joseki. White may invade the 3-3 at A and black will be uncomfortable with how to proceed. He could also cap at B to attempt to build more central influence since black is low on the right. C is a common move if the upper right corner is white's. D used to be common in this situation, but is now considered to be too slow - it is only played when white wants to be solid.

White could also just tenuki to play a move like E.])))