(;CA[Windows-1252]AP[MultiGo:4.4.4]SZ[19]N[one pincer joseki fir horshi]MULTIGOGM[1] ;B[pd];W[qf];B[qh];W[of]LB[nd:A][nc:B][qk:C][qe:D][pg:E]C['a' and 'b' are joseki. 'c' is mistake D is rare joseki 'e' is not recommended.] (;B[nd]LB[pi:A][qc:B][oh:C][pk:D][qj:E]C['a' is the usual joseki. To avoid complications, Guo Juan 5P will just play 'b'. 'c' is questionable. 'd' is not recommended. 'e' is a mistake.] (;W[pi]CR[qp]TR[nc]MA[pp]LB[ph:A][qi:B][qe:C][qj:D]C[The sequence from White 2 on is similar, but not the same as with the one-space pincer in conjunction with the 3-4 stone. 'a' is joseki if there's a White stone on the squared point, hoshi in the lower right corner, or no White stone in that corner. In this case, 'b' is not recommended. But, if there's a White stone on the circled point, komoku in the lower right corner, 'a' is disadvantageous, and 'b' is the correct choice. 'c' and 'd' are inferior. If Black 1 would be on the triangled stone, 'a' would be wrong and 'c' correct.] (;B[ph] (;W[oh]LB[qi:A][oi:B] (;B[qi]C['a' is the usual joseki, 'b' punishes if Black has the ladder.];W[pj];B[qj] ;W[pk];B[ql]LB[om:A][pl:B][og:C]C['a' is usual and necessary. If the choice of the variation is correct whole-board-strategy and White wants to create a big wall, he must play 'b'. Connecting on 'c' is too slow and unnecessary.]) (;B[oi];W[qi]LB[og:A][ri:B]C['a' or 'b'.] (;B[ri];W[rh];B[rg];W[qg];B[sh];W[pg];B[rh];W[qk];B[rj];W[ok] (;N[])) (;B[og];W[nh];B[pg];W[ng];B[pf];W[rh];B[nf];W[oj];B[oe];W[rg])))) (;N[Add white] (;B[qi];W[pj]LB[qj:A][ph:B]C['a' is correct. 'b' is a mistake. ])) (;B[qe]LB[qi:A][rf:B][re:C]C['a' is correct. 'b' and 'c' are wrong.] (;W[qi];B[rf];W[qg];B[rg];W[rh]LB[oc:A][qc:B][rd:C][lc:D]C[Good for White because the Black corner is still open. Later, White 'a' is correct. 'b' and 'c' are not recommended. White 'd' is a mistake.]) (;W[rf]) (;W[re])) (;N[])) (;N[]) (;N[]) (;N[])) (;B[nc];W[pi]TR[nd]LB[qe:A][ph:B]C['a' is joseki. 'b' is a mistake. If Black 1 would be on the triangled point instead, 'a' would be wrong and 'b' correct.] (;N[]) (;B[ph]N[B];W[oh];B[qi];W[pj];B[qj];W[pk];B[ql];W[om];B[dq];W[md];B[mc];W[ld]C[White's influence is better than the Black territory.]) (;B[qe]LB[qi:A][rf:B]C['a' is joseki, 'b' depends on a ladder. ]N[A] (;W[rf];B[ph];W[oh];B[oi]LB[oj:A][qi:B]C['a' starts the ladder. White cannot get a good result without the ladder on 'b'.] (;W[oj];B[ni];W[nh];B[pj];W[qi];B[qj];W[ri];B[rh];W[rj];B[rk];W[qk];B[pk];W[mi] ;B[nj];W[ok];B[pl];W[nk]) (;W[qi] (;B[og];W[nh];B[pf];W[ng];B[pg];W[rh];B[oj]C[Good for Black.]) (;B[ri];W[rh]LB[rg:A][og:B] (;B[rg];W[qg];B[sh];W[pg];B[rh];W[qk]C[White is successful.])))))) (;B[qk];W[nd];B[nc]LB[mc:A][oc:B]) (;B[qe]LB[rf:A][re:B][qg:C]) (;B[pg];W[pf];B[nd]LB[pk:A][pi:B]C['a' is correct, 'b' is inferior.] (;W[pi];B[qi];W[pj];B[qj];W[pk];B[ql];W[om];B[qm])))
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