(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[otake hideo]PB[kato masao]
;B[pd]
;W[dp]
;B[pp]
;W[dd]
;B[fq]
;W[cn]
;B[ip]
;W[eq]
;B[dj]
;W[qn]
;B[np]
;W[rp]
;B[pk]
;W[qq]
;B[pq]
;W[cf]C[KW: I believe this is the wrong direction. The top is more important]
;B[fd]
;W[nc]
;B[pf]
;W[jd]C[good]
;B[dc]
;W[cc]
;B[db]
;W[ed]
;B[fc]
(;W[fe]C[This is giving Black an easy hane]
;B[ge]
;W[ff]
;B[ch]C[bizarre move; White is strong here]
;W[cb]
;B[hc]
(;W[ne]LB[jb:A]C[This is a kind of building move, but Black has an easy time at A]
;B[ld]
;W[lc]
;B[md]
;W[mc]
;B[nd]
;W[od]
;B[oe]
;W[oc]
;B[ke]LB[jb:C][je:A][ne:B][ff:E][om:D]C[Questions are a little different here. I do not recall the exact moves / sequence at top right.
But the other board is the same.
How can White invade bottom moyo?
How can White use weakness of Black stones at left?
**END OF QUESTIONS**
KW: as usual, you won't get answers to your questions, rather different questions.
1) who has more territory?
2) who has the stronger groups?
if weak groups, where are they?
3) where are the cuts/connections?
4) where are the spheres of influence?
You give a few answers already: Black has a weak group on the left and Black has a moyo at the bottom. I slightly disagree in both cases. So let me answer my own questions
1) White has all the territory. Black hardly has any
2) Actually, White as well. Black has two weak groups: top and left, although left is just two stones in a lot of space. I'd call the left group rather "light" than weak.
3) A is the point to keep Black's weakes group disconnected. Also B is a cutting stone, not to be neglected here. True, C remains available for Black's weak group and that's a bit of a nuisance. D is a connection for Black's bottom and right. E cuts off Black's weak groups.
4) Black has the influence at centre and bottom.
Now let's look at a few moves
]
(;W[kq]C[The obvious invasion point for the bottom is here. But .. is Black really intrested in the bottom?]
;B[kp]
;W[lp]
;B[lo]
;W[jp]
;B[ko]
;W[jq]
;B[jo]
;W[iq]
;B[hp]
;W[hq]
;B[gp]
;W[fr]
;B[je]
;W[id]
;B[jb]
;W[kc]
;B[om]C[White gets more territory but Black's centre keeps growing])
(;W[jb]C[If White picks the mutual base]
;B[if]C[Black lightly connects
Black is perhaps not out of trouble but White has to worry about the centre more than anything])
(;W[je]C[Therefore, White needs to cut here. ]
(;B[jb]C[If Black makes life]
;W[kf]C[Then his central influence goes to waste])
(;B[kf]C[If he preserves his influence]
;W[jf]C[then this move basically presents the same choice:]
(;B[jb]C[if life]
;W[kg]C[then no influence])
(;B[kg]C[if influence]
;W[jb]C[then a hard life]))))
(;W[jb]C[Maybe this is better, in terms of mutual base]))
(;W[ff]
;B[cb]
;W[bc]))
RU[Japanese]SZ[19]KM[0.00]
PW[otake hideo]PB[kato masao]
;B[pd]
;W[dp]
;B[pp]
;W[dd]
;B[fq]
;W[cn]
;B[ip]
;W[eq]
;B[dj]
;W[qn]
;B[np]
;W[rp]
;B[pk]
;W[qq]
;B[pq]
;W[cf]C[KW: I believe this is the wrong direction. The top is more important]
;B[fd]
;W[nc]
;B[pf]
;W[jd]C[good]
;B[dc]
;W[cc]
;B[db]
;W[ed]
;B[fc]
(;W[fe]C[This is giving Black an easy hane]
;B[ge]
;W[ff]
;B[ch]C[bizarre move; White is strong here]
;W[cb]
;B[hc]
(;W[ne]LB[jb:A]C[This is a kind of building move, but Black has an easy time at A]
;B[ld]
;W[lc]
;B[md]
;W[mc]
;B[nd]
;W[od]
;B[oe]
;W[oc]
;B[ke]LB[jb:C][je:A][ne:B][ff:E][om:D]C[Questions are a little different here. I do not recall the exact moves / sequence at top right.
But the other board is the same.
How can White invade bottom moyo?
How can White use weakness of Black stones at left?
**END OF QUESTIONS**
KW: as usual, you won't get answers to your questions, rather different questions.
1) who has more territory?
2) who has the stronger groups?
if weak groups, where are they?
3) where are the cuts/connections?
4) where are the spheres of influence?
You give a few answers already: Black has a weak group on the left and Black has a moyo at the bottom. I slightly disagree in both cases. So let me answer my own questions
1) White has all the territory. Black hardly has any
2) Actually, White as well. Black has two weak groups: top and left, although left is just two stones in a lot of space. I'd call the left group rather "light" than weak.
3) A is the point to keep Black's weakes group disconnected. Also B is a cutting stone, not to be neglected here. True, C remains available for Black's weak group and that's a bit of a nuisance. D is a connection for Black's bottom and right. E cuts off Black's weak groups.
4) Black has the influence at centre and bottom.
Now let's look at a few moves
]
(;W[kq]C[The obvious invasion point for the bottom is here. But .. is Black really intrested in the bottom?]
;B[kp]
;W[lp]
;B[lo]
;W[jp]
;B[ko]
;W[jq]
;B[jo]
;W[iq]
;B[hp]
;W[hq]
;B[gp]
;W[fr]
;B[je]
;W[id]
;B[jb]
;W[kc]
;B[om]C[White gets more territory but Black's centre keeps growing])
(;W[jb]C[If White picks the mutual base]
;B[if]C[Black lightly connects
Black is perhaps not out of trouble but White has to worry about the centre more than anything])
(;W[je]C[Therefore, White needs to cut here. ]
(;B[jb]C[If Black makes life]
;W[kf]C[Then his central influence goes to waste])
(;B[kf]C[If he preserves his influence]
;W[jf]C[then this move basically presents the same choice:]
(;B[jb]C[if life]
;W[kg]C[then no influence])
(;B[kg]C[if influence]
;W[jb]C[then a hard life]))))
(;W[jb]C[Maybe this is better, in terms of mutual base]))
(;W[ff]
;B[cb]
;W[bc]))
P3 is the most natural territorial attacking move. It would be hard to find a better example of the proverb "make territory while attacking". Your other suggestions are also good, but not nearly as direct.
these two B stones are still very weak, but it is no longer obvious how to make territory while attacking them. Your suggested strategy would make a loose wall, but how would that wall produce territory? The capping move suggested by Bill is a much stronger local attack, but assuming B manages to survive, where does W get territory from this attack?
invasion at R8 looks like an overplay, but expecting to kill this stone is probably unreasonable. The general principle here is to attack from the weak side, pushing your opponent toward your stronger stones. That way you get to strengthen your weaker group, while giving your opponent no weaknesses to exploit. In this position, P5 is sente for W, so the lower W stones form a perfect wall. The strongest shape move would be Q9, putting huge pressure on B. Try playing out some sequences starting there. You should be able to keep the B group enclosed and either kill it or force it to make a very small life in gote, while you make territory above and maybe also to the left. Your suggested move "C" is a similar idea, but less severe.
at E2 would be another perfect example of taking territory while attacking. Your move E8 looks like an attempt to kill. Of course this wins if you succeed in killing, but if you fail to kill this stone ends up nearly useless. After taking E2, it is likely that you will get to play additional useful attacking moves around C8 and G11, while letting B escape.