Life In 19x19

This one is forced. Will post variations when I can.
There's a little more aji here than I thought but it will be hard for white still.

Why not N18 or even M17 instead of O18, if black wants to play as safe as possible?

I'm not saying there is some risk with O18, but there should be even less with the other two possibilities and white still has no space for an eye in the top edge.

Whbew, I just read a variation that was disaster for B and white's probe is definitely aji keshi. More reading... and will post that in a minute.

[sgf-full](;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
GN[]DT[2011-03-08]PC[http://lifein19x19.com/]AW[fc][hc][kc][nc][fd][hd][nd][ce][he][ie][hf][jf][nf][hg][ng][qg][rg][dh][eh][fh][hh][lh][nh][ph][fi][hi][mi][oi][pi][cj][pj][fk][hk][ik][jk][kk][lk][qk][bl][cl][gl][il][ql][dm][em][fm][gm][hm][jm][rm][cn][jn][fp][jp][cq][nq]AB[ib][nb][pb][ec][ic][mc][dd][id][jd][pd][de][je][le][qe][df][ff][if][pf][rf][ig][lg][og][ih][oh][ei][gi][ii][ni][fj][gj][hj][ij][nj][oj][dk][gk][pk][dl][jl][kl][ll][nl][pl][bm][cm][im][qm][bn][dn][en][fn][gn][hn][in][pn][mo][cp][dp][pp]C[Diagram from http://lifein19x19.com/

]PL[W]
;W[qc]LB[pc:A][od:C][oe:B]C[Aji with the peep at p15 looks to be enough to live.]MN[113]
(;B[pc]LB[ld:B][oe:A]C[The most solid idea is first instinct.]
(;W[oe]C[Does peep first work?]
;B[pe]
;W[md]
;B[lc]
;W[ki]
;B[kg]
;W[mf]
;B[lf]
;W[me]LB[lj:A]C[Oh I misjudged that A was an eye -]
;B[mj]
;W[lj]
;B[jj]
;W[kj]
;B[kh]C[No fear from this variation then.])
(;W[ld]C[This cut seems better than n16.]
;B[md]
;W[me]LB[mb:B][lc:C][mf:A]
(;B[mf]
;W[oe]
;B[pe]
;W[mb]C[A ko.]
;B[ne]LB[gj:A]C[Back to this variation - it looks like the best for B. White will live but thanks to the A stone, he wont live everywhere!])
(;B[mb]
;W[lf]
;B[kf]LB[ke:A][kg:B]
(;W[ke]
;B[kg]
;W[kb]
;B[kd]
;W[lc]
;B[le]C[Ko?]
;W[of])
(;W[kg]LB[mf:A][jg:B]
(;B[mf]
;W[mg]
;B[ne]
;W[lf]
;B[jg]
;W[me]
;B[ke]
;W[oe]
;B[pe]
;W[of]
;B[pg]
;W[od]C[idk about that, too complicated.])
(;B[jg]C[Have to take this stone.]
;W[mg]
;B[kh]
;W[ke]
;B[lg]C[Another ko? Definitely a heavier ko for B.])))
(;B[lc]C[This liberty looks important.]
;W[lf]
;B[kf]LB[ke:A][kg:B]
(;W[ke]
;B[kg]C[Dead])
(;W[kg]LB[mf:A][jg:B]
(;B[mf]
;W[oe]
;B[pe]
;W[mg]
;B[ne]
;W[lf]
;B[me]
;W[ke]C[Wow... this is weird.])
(;B[jg]
;W[mg]
;B[gh]LB[gj:2][fk:1]C[If you've gotten this far, congratz. Now you know my secret plan.

And I was SURE the middle was dead but now - the 1-2 exchange is worth almost as much.])))))
(;B[oe]LB[pc:A][of:B]C[If I take the seeming vital point - can W cut me?]
(;W[pc]
;B[oc]
;W[od]
;B[ob]
;W[md]
;B[ld]
;W[mf]LB[qd:B][lf:A]
(;B[lf]
;W[qf]
;B[pe]
;W[re]
;B[rd]
;W[of]
;B[pg]
;W[sf]
;B[qd]
;W[rc]C[Yes.])
(;B[qd]
;W[lf]
;B[kf]
;W[kg]
;B[jg]
;W[mg]
;B[ki]LB[kh:A][li:B]C[Not good for W. A and B are miai.]))
(;W[of]
;B[pg]
;W[qf]
;B[pe]
;W[pc]
;B[oc]
;W[od]
;B[ob]
;W[ne]
;B[rd]LB[rc:A][md:B]
(;W[rc]
;B[sc]
;W[sb]
;B[sd]
;W[qb]
;B[ra]
;W[qd]C[Uops.])
(;W[md]LB[lc:B][ld:A]
(;B[ld]
;W[mb]
;B[lc]
;W[rc]
;B[sc]
;W[sb]
;B[sd]
;W[qb]
;B[ra]
;W[lb]C[Those marked stones are too weak for this resistance.])
(;B[lc])))))[/sgf-full]

Mmmmh. It's a lot of variations. Good luck finding my secret plan, mauahaha. Please comment on the variations if you can.

I read that W is dead(it's the same as the variation with p15 first). He either missed my living variation or I messed it up.

Click Here To Show Diagram Code

[go]$$Wcm111 Prisoner Count: B-0 W-1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . X . 8 . . X . X . . . |
$$ | . . . . X O . O X . O X X O . X O . . |
$$ | . . . X . O . O X X . O O O . X . . . |
$$ | . . O X . . . O O X . X . . . . X . . |
$$ | . . . X . X . O X O . . . O . X . X . |
$$ | . . . . . . . O X . . X . O X . O O . |
$$ | . . . O O O . O X . . O . O X O . . . |
$$ | . . . . X O X O X . . . O X O O . . . |
$$ | . . O , . X X X X , . . . X X O . . . |
$$ | . . . X . O X O O O O O . . . X O . . |
$$ | . O O X . . O . O X X X . X . X O . . |
$$ | . X X O O O O O X O . . . . . . X O . |
$$ | . X O X X X X X X O . . . . . X . . . |
$$ | . . . . . . . . . . . . X . . . . . . |
$$ | . . X X . O . . . O . . . . . X . . . |
$$ | . . O . . . . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

I feel like this is another way. I wonder if it's better to defend when trying to kill?

Click Here To Show Diagram Code

[go]$$Wcm111 Prisoner Count: B-0 W-1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . X . . . . X . X . . . |
$$ | . . . . X O . O X . O X X O . X O . . |
$$ | . . . X . O . O X X X O O O . X . . . |
$$ | . . O X . . . O O X . X O . O X X . . |
$$ | . . . X . X . O X O . . . O O X . X . |
$$ | . . . . . . . O X . B X . O X X O O . |
$$ | . . . O O O 4 O X 2 1 O . O X O . . . |
$$ | . . . . X O X O X . 3 . O X O O . . . |
$$ | . . O , . X X X X , . . . X X O . . . |
$$ | . . . X . O X O O O O O . . . X O . . |
$$ | . O O X . . O . O X X X . X . X O . . |
$$ | . X X O O O O O X O . . . . . . X O . |
$$ | . X O X X X X X X O . . . . . X . . . |
$$ | . . . . . . . . . . . . X . . . . . . |
$$ | . . X X . O . . . O . . . . . X . . . |
$$ | . . O . . . . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]