PeterPeter wrote:
Bill Spight wrote:

Black to play
- Click Here To Show Diagram Code
[go]$$B Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O X X . . . . X . . . . . . . . |
$$ | . X . X O . . O X O O X X . . . . . . |
$$ | X . X X O O . O O O . O . . X , X X . |
$$ | . X O O X X O . . . O . . . . X O . . |
$$ | . . O . . X X . . . . . . . . . O . . |
$$ | . . O X . O X . . . . . . . . . . . . |
$$ | . . O . . X X O . . . . . . X . . . . |
$$ | . . . O . O X X . X X . O X O O . . . |
$$ | . . X O . O O X . X . X O . X O O . . |
$$ | . . X . . . X O O O X O O . . . . . . |
$$ | . . . O . . . . . . O . . . X . X . . |
$$ | . . X X . . . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . X X . . X . |
$$ | . . X . . . . . . . . . . . . O O X . |
$$ | . . . , . . . . . , . . . O . , . O O |
$$ | . . . O . . . . . . . . . . O . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This is not a guess the next play problem. It is to prompt discussion. What are some good moves in this position?
I'll just have a go at the first one for now, to check I am on the right lines. How many is reasonable? Should I label each move and give reasons?
There are so many possibilities...
The main priorities seem to be:
The big unclaimed area at the bottom;
Protecting the weak black group in the lower right (finding an escape route); and
Attacking the 2 white groups in the upper right (R10 and R14), by separating them.

Black to play
- Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O X X . . C . X . . . . . . . . |
$$ | . X . X O . . O X O O X X . . . . . . |
$$ | X . X X O O . O O O . O . . X , X X . |
$$ | . X O O X X O . . . O . . . . X O . . |
$$ | . . O . . X X . . . . . . . . . O . . |
$$ | . . O X . O X . C . . . . . . . C . . |
$$ | . . O . . X X O . . . . . . X . . . . |
$$ | . . . O . O X X . X X . O X O O . . . |
$$ | . . X O . O O X . X . X O C X O O C . |
$$ | . . X . . . B O O O X O O . . . . . . |
$$ | . . . O . . . . . . O . . . X . X . . |
$$ | . . X X . C . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . C . X X C . X . |
$$ | . . X . . . . . . . . . . . . O O X . |
$$ | . . . , . . . . . , . . . O . , . O O |
$$ | . . . O . C . . C . . . . . O . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
White was Hayashi Gembi, Black was Honinbo Jowa.
It is important to note that the White group on the left is not completely alive yet. It has only about a half eye on the side and could be in trouble if the

stone escapes. The bottom side is a big place, but there are more exciting places to play now.

Black to play
- Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O X X . . . . X . . . . . . . . |
$$ | . X . X O . . O X O O X X . . . . . . |
$$ | X . X X O O . O O O . O . . X , X X . |
$$ | . X O O X X O . . . O . . . . X O . . |
$$ | . . O . . X X . . . . . . . . . O . . |
$$ | . . O X . W X . S . . . . . . . . . . |
$$ | . . O . . X X W . . . . . . X . . . . |
$$ | . . . O . O X X . X X . O X O O . . . |
$$ | . . X O . O O X . X . X O . X O O . . |
$$ | . . X . . . B O O O X O O . . . . . . |
$$ | . . . O . . . . . . O . . . X . X . . |
$$ | . . X X . . . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . X X S . X . |
$$ | . . X . . . . . . . . . . . . O O X . |
$$ | . . . , . . . . . , . . . O . , . O O |
$$ | . . . O . . . . . . . . . . O . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I have marked with squares the two plays that look bad to me. Both are purely defensive. The play in the center secures life for the Black group, but it looks alive, anyway. There is an obvious eye for the

stone on the left, and if the other

stone runs, there is plenty of play. Besides, neither the White group on the left nor the three White stones in the center are yet secure.
As for the play on the right, how does it improve the eye potential for Black? It is a purely defensive play that does not secure life.

Black to play
- Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . 6 . . . . . . . . |
$$ | . . X O X X . 3 1 2 X 4 5 . . . . . . |
$$ | . X . X O . . O X O O X X . . . . . . |
$$ | X . X X O O . O O O . O . . X , X X . |
$$ | . X O O X X O . . . O . . . . X O . . |
$$ | . . O . . X X . . . . . . . . . O . . |
$$ | . . O X . O X . . . . . . . . . S . . |
$$ | . . O . . X X O . . . . . . X . a . . |
$$ | . . . O . O X X . X X . O X O O . . . |
$$ | . . X O . O O X . X . X O . X O O . . |
$$ | . . X . . . B O O O X O O . . . . . . |
$$ | . . . O . . . . . . O . . . X . X . . |
$$ | . . X X . S . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . S . X X . . X . |
$$ | . . X . . . . . . . . . . . . O O X . |
$$ | . . . , . . . . . , . . . O . , . O O |
$$ | . . . O . . . . . . . . . . O . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

is a nice idea, to attack the White group. However, as the variation shows, White gets an eye on the top side, anyway.
The one space jump on the left threatens to save the

stone and maybe kill the White group. The jump on the right looks nice, but it is mostly a running play which does not threaten the White center stones very strongly.
The attachment against the two White stones in the top right is a nice idea, but White can easily give up the two stones now. Besides, "a" looks like a better point for attack. In general, attachments are not so good for attack. The attachment stone may be vulnerable, while a slightly more distant move usually offers fewer options for the opponent.

Black to play
- Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O X X . . . . X . . . . . . . . |
$$ | . X . X O . . O X O O X X . . . . . . |
$$ | X . X X O O . O O O . O . . X , X X . |
$$ | . X O O X X O . . . O . . . . X O . . |
$$ | . . O . . X X . . . . . . . . . O . . |
$$ | . . O X . O X . . . . . . . . . . . . |
$$ | . . O . . X X O . . . . . . X . . . . |
$$ | . . . O . O X X . X X . O X O O . . . |
$$ | . . X O . O O X . X . X O . X O O C . |
$$ | . . X . . . B O O O X O O . . . . S . |
$$ | . . . O . . S . . . O . . . X . X . . |
$$ | . . X X . C . . . . . . S O . . . . . |
$$ | . . . . . . . . . . . C . X X . . X . |
$$ | . . X . . . . . . . . . . . . O O X . |
$$ | . . . , . . . . . , . . . O . , . O O |
$$ | . . . O . . . . . . . . . . O . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Now the squares are three plays that I would think about. They are close to moves that you considered.

You can compare the plays and see what you think.
(;SZ[19]FF[3]
PW[Hayashi Genbi]
WR[6d]
PB[Honinbo Jowa]
BR[6d]
DT[1821-05-29 {Bunsei 4 IV 28}]
KM[0]
RE[B+R]
US[GoGoD95]
;B[qd];W[dq];B[od];W[po];B[cd];W[qj];B[co];W[ec];B[ic];W[ch];B[dc];W[de]
;B[dd];W[ed];B[ee];W[ce];B[be];W[bd];B[bc];W[db];B[ad];W[cf];B[dg];W[cg]
;B[cb];W[hd];B[fe];W[hc];B[ck];W[fg];B[gf];W[id];B[gg];W[fi];B[kd];W[kc]
;B[lc];W[jd];B[kb];W[jc];B[gi];W[fj];B[fb];W[fd];B[eb];W[ge];B[ff];W[ld]
;B[fh];W[dj];B[mc];W[ke];B[cj];W[di];B[dm];W[hh];B[gh];W[hk];B[hj];W[ik]
;B[ji];W[oq];B[kk];W[dl];B[cm];W[qe];B[pe];W[qf];B[rd];W[kj];B[jj];W[jk]
;B[lj];W[kl];B[ki];W[mk];B[oj];W[mj];B[ol];W[lk];B[ql];W[oi];B[ni];W[mi]
;B[gk];W[gj];B[hi];W[pj];B[oh];W[pi];B[ro];W[qo];B[rn];W[rp];B[rq];W[sp]
;B[on];W[nm];B[nn];W[np];B[mm];W[nl];B[om];W[rk];B[km];W[ln];B[jl];W[kj]
;B[pq];W[pp];B[kk];W[ll];B[lm];W[mn];B[gl];W[ko];B[kn];W[jm];B[jn];W[il]
;B[jo];W[mo];B[fm];W[gq];B[qr];W[qp];B[mq];W[nr];B[kp];W[mp];B[hq];W[hr]
;B[ir];W[gr];B[hp];W[cp];B[bo];W[bp];B[nh];W[nj];B[ap];W[aq];B[ao];W[bq]
;B[qh];W[ph];B[qg]
)
Here is the game itself.

Yes, as a problem it is difficult. But, as I said, I was not presenting it as a problem, but as something to discuss. I am pleased with PeterPeter's ideas. A couple of them I think are mistakes, but he identified good regions to play in. That is the most important thing. Next is to find the right play in the right area.
