L & D Series from cyberoro (5D PLUS) problem #195

[Magicwand]

BLACK TO KILL WHITE (NO KO)

$$Bcm1 Prisoners: W=0, B=0
$$ -----------------------------
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . X X X X . |
$$ | . . . . . . . . . . O X . |
$$ | . . . , . . . . X . O X . |
$$ | . . . . . X X X . O . O X |
$$ | . . . X X O O O . . . O X |
$$ | . . . . O . . . . . . . . |
$$ ----------------------------

Click Here To Show Diagram Code

[go]$$Bcm1 Prisoners: W=0, B=0
$$ -----------------------------
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . X X X X . |
$$ | . . . . . . . . . . O X . |
$$ | . . . , . . . . X . O X . |
$$ | . . . . . X X X . O . O X |
$$ | . . . X X O O O . . . O X |
$$ | . . . . O . . . . . . . . |
$$ ----------------------------[/go]

[gonut]

OK, now that the season premiere of "Big Bang Theory" is over, I can look at go again.

You've given another really instructive problem (at least for me). I have an uneasy feeling that I'm not seeing the toughest White defense though.

[sgf-full](;
SZ[13]
AB[ih][jh][kh][lh][li][ij][lj][fk][gk][hk][mk][dl][el][ml]
AW[ki][kj][jk][lk][fl][gl][hl][ll][em]
C[Black plays];
B[il];W[ik];B[jl]
(;
W[im];B[jj];W[kk];B[gm];W[kl];B[fm];W[jm];B[lm]
)
(;
W[jm];B[jj];W[kk];B[fm];W[kl];B[lm];W[im];B[gm]
)
(;
W[kl];B[jj];W[kk];B[jm];W[km];B[im];W[fm];B[hm]
)
)[/sgf-full]

[Magicwand]

OK, now that the season premiere of "Big Bang Theory" is over, I can look at go again.

You've given another really instructive problem (at least for me). I have an uneasy feeling that I'm not seeing the toughest White defense though.

you are good to go.