(;
GM[1]FF[4]VW[]AP[Many Faces of Go:11.0]
SZ[19]
HA[0]
ST[0]
PB[Stephenson]
PW[Moon Cha]
DT[2000-02-26]
PC[Princeton NJ]
KM[5.5]
EV[NJ OPEN]
BR[4 Dan]
WR[6 Dan]
RO[1]
C[2000 NJ Open (Princeton University)
round 1
White: Moon Cha 6d
Black: John Stephenson 3d
Result: Black wins by more than 10.

Commentary by Yang Yi-lun 7p]
F[];B[qd]
C[Dear John,

I am so glad to look it -- you played as well as a 6 Dan in this \
game.]
;W[dc];B[cp];W[qp]
C[a is the biggest move.]
;B[oq];W[ep]
C[a is a nice pincer.]
;B[hp];W[en]
;B[cn];W[el];B[cl];W[cq];B[bq];W[pn]
C[a is ok but little bit too soon. b is the best move that helps \
both weak stones.]

(;B[qq];W[rq];B[pp];W[qo];B[qr];W[qj]
C[mitdahand:
Is a move at or around b more important than at a?

Yang:
Yes, b is still important, but not as important as before because \
black's lower right corner was strong already. So, a is ok.]

(;B[oc];W[kp]
C[a is unnecessary. Black has to help weak stone at b first.]

(;B[on]
C[White has to hane at b...]

(;W[np]
C[a is a good forcing move.]
;B[nq];W[mp];B[oo];W[hn]
C[a is the only move to get out, black must save that important \
stone.]
;B[jo]
C[mitdahand:
If white did b instead, what is the proper way for black to handle \
it (to avoid bad shape)?

Yang:
White has to push out with b...]
TR[hn]

(;W[ln];B[jm];W[ll]
C[a is a key point.]
;B[jp]
C[This is a good situation for black.]
;W[jk]
C[a is another important spot.]
;B[kq];W[lq]
C[b is a good timing.]

(;B[kr];W[lr]
C[mitdahand:
I think black may force at b right now before pushing at a?

Yang:
Not necessary -- b is a forcing move for black in anytime.]

(;B[ko]
C[Now white has to defend at b.]

(;W[lp]
C[This exchange is good for black anyway.
Now b is useful...]

(;B[lo];W[nn]
C[a is still a great move.]
;B[pm];W[nm];B[qm];W[ir]
C[a is the best answer.]
;B[hr];W[jq];B[iq]
;W[jr]
C[a is ok. b is should be a better way to make eye shape.]

(;B[fp];W[gq]
C[b is timing...]

(;B[fq];W[hq]
C[mitdahand:
Please see my question for variation b.

Yang:
a and b are ok.  c is the best...]

(;B[ip]
C[White might push at b possible...]

(;W[gr];B[gp];W[dp];B[fr];W[hs];B[dq];W[co];B[cr]
C[This is good for black.]
;W[bo]
C[a is the best defense.]

;B[ci]
C[Black is way ahead.]
;W[cg]
C[a attaches to a weak stone. Black has to get out at b.]

(;B[bg];W[bh];B[ch]
C[White has to defend at b...]

(;W[bi]
C[a is a strong move!]
;B[bf];W[cj]
C[a is the best move.]
;B[dj];W[ck]
C[a is a wonderful move.]
;B[dd];W[dk]
C[a is ok. b could be better since the top side is more valuable \
than the corner...]

(;B[cc];W[ec]
C[a is a big move.]
;B[dg];W[cb];B[cd];W[bb]
C[a is a slow push. Black has to squeeze from b.]

(;B[ed];W[gc];B[fd];W[hc]
C[a is the biggest move.]
;B[qg];W[rm]
C[a is the correct answer.]
;B[rn];W[rl];B[qn]
;W[rd]
C[a is the best answer -- stronger - extend.]
;B[qc];W[rh]
C[a is passive. Black can block at b.]

(;B[re];W[rg];B[rf];W[lc]
C[a is smart -- a double sente move.]
;B[bp];W[nb];B[ob];W[nc]
C[a is a clever move.]
;B[ao]
;W[bn];B[bm];W[dn];B[an];W[cm];B[bk];W[bj]
C[Black got alot.
a is a strong invasion!]
;B[jc];W[je]
C[a is a proper way to get out.]
;B[id]
C[It hurts white's top left.]

;W[ge];B[ie];W[he];B[jf]
C[Black makes a wonderful shape.]
;W[ke];B[hf];W[kf]
C[a is too soon. b is an urgent point...]

(;B[kg];W[lg];B[jg];W[gf]
C[Now, the game is complicated.]
;B[lh];W[hg];B[if];W[mg];B[gg]
;W[hh];B[fg];W[ii]
C[a is the best defense.]
;B[ji];W[jj]
C[a is the only move.]
;B[mh];W[nh]
C[a is a severe cut since white is short of liberty.]
;B[ng];W[me];B[ld]
;W[md]
C[Game records ends here. Black won by more than 10 points.]
)
(;B[gf]
C[Black will win this game without trouble.]

(;W[jg];B[gd];W[hd];B[fc];W[fb];B[gb];W[eb];B[hb])
(;W[ib];B[jg])))
(;B[rg]
C[There is nothing for white in the top right corner.]
))
(;B[gc];W[ed];B[ee];W[gd];B[ic];W[fe];B[ef]))
(;B[ec];W[cc];B[fd];W[bd];B[dg];W[eb];B[fb];W[da];B[qg]))
(;W[bf];B[dg];W[cf];B[bi];W[ag]
C[White got a large corner.]
))
(;B[ei]
C[It also threatens white weak stones.]
))
(;W[gp];B[go];W[gr];B[fr];W[hs];B[fo];W[ho]))
(;B[gr];W[ip];B[dq]
C[Perhaps this way is good enough for black?

Yes.]
)
(;B[gp];W[ip];B[io]))
(;B[is];W[ks];B[fq]))
(;B[fq]))
(;B[pm]
(;W[qm];B[lo];W[nn];B[mn])
(;W[nm];B[qm]
C[This is great for black.]
)))
(;W[mn]))
(;B[pm]))
(;B[ko];W[lo];B[lp];W[mq];B[ol]))
(;W[ko]
C[a is the proper move to get out...]
;B[in];W[im];B[jn]
C[This is the best black can -- bac looking but ok, because there \
is a cutting point in white.]
))
(;W[om];B[nn];W[np];B[nq];W[mp]))
(;B[in]))
(;B[kp]))
(;B[kp]
C[Black might squeeze from right side at x later.]
MA[ql]
))