It came down to ko... I think

[chef]

I played this game recently and at the end I reviewed it with my opponent. We were both wondering if there was a way to kill his black group at the end. It all came down to who would win the ko (I think). That, plus, I'm sure I made mistakes all over, so any other comments are truly appreciated. I played white

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]TM[0]OT[10x60 byo-yomi]
PW[bbwlover]PB[kungfoo]WR[9k]BR[9k]DT[2014-06-10]PC[The KGS Go Server at http://www.gokgs.com/]C[kungfoo [9k\]: hi
]RE[B+Resign]
;B[pd]BL[60]OB[10]
;W[pp]WL[60]OW[10]
;B[dd]BL[60]OB[10]
;W[dp]WL[60]OW[10]
;B[jd]BL[60]OB[10]
;W[nc]WL[60]OW[10]
;B[oc]BL[60]OB[10]
;W[nd]WL[60]OW[10]
;B[lc]BL[60]OB[10]
;W[of]WL[60]OW[10]
;B[pf]BL[60]OB[10]
;W[oe]WL[60]OW[10]
;B[pe]BL[60]OB[10]
;W[pg]WL[60]OW[10]
;B[og]BL[60]OB[10]
;W[qg]WL[60]OW[10]
;B[oh]BL[60]OB[10]
;W[mf]WL[60]OW[10]
;B[qi]BL[60]OB[10]
;W[ri]WL[60]OW[9]
;B[rj]BL[60]OB[10]
;W[qh]WL[60]OW[9]
;B[pi]BL[60]OB[10]
;W[ql]WL[60]OW[9]
;B[lg]BL[60]OB[10]
;W[sh]WL[60]OW[9]
;B[qk]BL[60]OB[10]
;W[re]WL[60]OW[9]
;B[rd]BL[60]OB[10]
;W[rf]WL[60]OW[9]
;B[rg]BL[60]OB[10]
;W[rc]WL[60]OW[9]
;B[sd]BL[60]OB[10]
;W[qd]WL[60]OW[9]
;B[qc]BL[60]OB[10]
;W[qe]WL[60]OW[9]
;B[rb]BL[60]OB[10]
;W[se]WL[60]OW[9]
;B[sc]BL[60]OB[10]
;W[sg]WL[60]OW[9]
;B[lf]BL[60]OB[10]
;W[oa]WL[60]OW[8]
;B[pb]BL[60]OB[10]
;W[le]WL[60]OW[7]
;B[ke]BL[60]OB[10]
;W[mg]WL[60]OW[7]
;B[mh]BL[60]OB[10]
;W[ng]WL[60]OW[7]
;B[nh]BL[60]OB[10]
;W[ob]WL[60]OW[7]
;B[od]BL[60]OB[10]
;W[ne]WL[60]OW[7]
;B[ld]BL[60]OB[10]
;W[mb]WL[60]OW[6]
;B[lb]BL[60]OB[10]
;W[me]WL[60]OW[6]
;B[ma]BL[60]OB[10]
;W[na]WL[60]OW[6]
;B[la]BL[60]OB[10]
;W[jp]WL[60]OW[6]
;B[qn]BL[60]OB[10]
;W[pl]WL[60]OW[6]
;B[on]BL[60]OB[10]
;W[nl]WL[60]OW[6]
;B[mn]BL[60]OB[10]
;W[ll]WL[60]OW[6]
;B[kn]BL[60]OB[10]
;W[jl]WL[60]OW[6]
;B[rl]BL[60]OB[10]
;W[pn]WL[60]OW[6]
;B[po]BL[60]OB[10]
;W[pm]WL[60]OW[6]
;B[qo]BL[60]OB[10]
;W[oo]WL[60]OW[6]
;B[no]BL[60]OB[10]
;W[op]WL[60]OW[6]
;B[np]BL[60]OB[10]
;W[nq]WL[60]OW[6]
;B[mq]BL[60]OB[10]
;W[nr]WL[60]OW[6]
;B[mr]BL[60]OB[10]
;W[qp]WL[60]OW[6]
;B[rp]BL[60]OB[10]
;W[rq]WL[60]OW[6]
;B[ro]BL[60]OB[10]
;W[qr]WL[60]OW[6]
;B[in]BL[60]OB[10]
;W[gp]WL[60]OW[6]
;B[iq]BL[60]OB[10]
;W[ip]WL[60]OW[6]
;B[jq]BL[60]OB[10]
;W[hq]WL[60]OW[6]
;B[kp]BL[60]OB[10]
;W[hl]WL[60]OW[6]
;B[gn]BL[60]OB[10]
;W[fl]WL[60]OW[6]
;B[dn]BL[60]OB[10]
;W[dl]WL[60]OW[6]
;B[ho]BL[60]OB[10]
;W[en]WL[60]OW[6]
;B[eo]BL[60]OB[10]
;W[do]WL[60]OW[6]
;B[em]BL[60]OB[10]
;W[fn]WL[60]OW[6]
;B[fm]BL[60]OB[10]
;W[fo]WL[60]OW[6]
;B[dm]BL[60]OB[10]
;W[el]WL[60]OW[6]
;B[gm]BL[60]OB[10]
;W[gl]WL[60]OW[6]
;B[hp]BL[60]OB[10]
;W[fd]WL[60]OW[6]
;B[gc]BL[60]OB[10]
;W[gd]WL[60]OW[6]
;B[fc]BL[60]OB[10]
;W[ed]WL[60]OW[6]
;B[ec]BL[60]OB[10]
;W[de]WL[60]OW[6]
;B[cd]BL[60]OB[10]
;W[ce]WL[60]OW[6]
;B[hd]BL[60]OB[10]
;W[he]WL[60]OW[6]
;B[ie]BL[60]OB[10]
;W[hf]WL[60]OW[6]
;B[ig]BL[60]OB[10]
;W[if]WL[60]OW[6]
;B[jf]BL[60]OB[10]
;W[jg]WL[60]OW[6]
;B[jh]BL[60]OB[10]
;W[hg]WL[60]OW[6]
;B[ih]BL[60]OB[10]
;W[hh]WL[60]OW[6]
;B[cj]BL[60]OB[10]
;W[cl]WL[60]OW[6]
;B[bg]BL[60]OB[10]
;W[bd]WL[60]OW[6]
;B[cf]BL[60]OB[10]
;W[be]WL[60]OW[6]
;B[ef]BL[60]OB[10]
;W[df]WL[60]OW[6]
;B[dg]BL[60]OB[10]
;W[ch]WL[60]OW[6]
;B[dh]BL[60]OB[10]
;W[cg]WL[60]OW[6]
;B[bh]BL[60]OB[10]
;W[ci]WL[60]OW[6]
;B[di]BL[60]OB[10]
;W[bf]WL[60]OW[6]
;B[bi]BL[60]OB[10]
;W[cf]WL[60]OW[6]
;B[bk]BL[60]OB[10]
;W[bl]WL[60]OW[6]
;B[ej]BL[60]OB[10]
;W[fi]WL[60]OW[6]
;B[aj]BL[60]OB[10]
;W[ck]WL[60]OW[6]
;B[fj]BL[60]OB[10]
;W[gi]WL[60]OW[6]
;B[fh]BL[60]OB[10]
;W[ee]WL[60]OW[6]
;B[ff]BL[60]OB[10]
;W[fg]WL[60]OW[6]
;B[gg]BL[60]OB[10]
;W[gh]WL[60]OW[6]
;B[eg]BL[60]OB[10]
;W[gf]WL[60]OW[6]
;B[ei]BL[60]OB[10]
;W[fg]WL[60]OW[6]
;B[gj]BL[60]OB[10]
;W[hj]WL[60]OW[6]
;B[gg]BL[60]OB[10]
;W[qf]WL[60]OW[6]
;B[pc]BL[60]OB[10]
;W[fg]WL[60]OW[6]
;B[fe]BL[60]OB[10]
;W[gg]WL[60]OW[6]
;B[ge]BL[60]OB[10]
;W[hi]WL[60]OW[6]
;B[cb]BL[60]OB[10]
;W[bb]WL[60]OW[4]
;B[cc]BL[60]OB[10]
;W[bc]WL[60]OW[4]
;B[ba]BL[60]OB[10]
;W[aa]WL[60]OW[3]
;B[ab]BL[60]OB[10]
;W[ac]WL[60]OW[3]
;B[ca]BL[60]OB[10]
;W[aa]WL[60]OW[3]
;B[hc]BL[60]OB[10]
;W[dk]WL[60]OW[3]
;B[dj]BL[60]OB[10]
;W[gk]WL[60]OW[3]
;B[bj]BL[60]OB[10]
;W[fk]WL[60]OW[3]
;B[ag]BL[60]OB[10]
;W[af]WL[60]OW[3]
;B[ab]BL[60]OB[10]
;W[pa]WL[60]OW[3]
;B[qa]BL[60]OB[10]
;W[aa]WL[60]OW[3]
;B[ad]BL[60]OB[10])

[EdLee]

Hi chef,

is a very strange feeling; of course you want to get ahead at P13 !
feels like overplay. You already have a big weak group, you have time to get cut like this ?
is unbearable.
B should just S15 and directly kill the right group.
is bad basics: usually we want to kill from the outside: hane T15 (proverb, there's death in the hane).
allows you to live because T15 is sente. B should've just connected directly at R16.

[Magicwand]

160 to F14 will kill.

[chef]

ARGH!!! Oh well, I'll catch it next time.

@EdLee would s12 for be better?

[EdLee]

Hi chef, for , usually the tesuji feeling here is the cross cut R10.
But if nothing here works and W dies, it's because was overplay.

[ez4u]

Even after missing the kill at 160, White should have connected at G15 with 176. White still has T18 in the upper right as a ko threat plus internal threats at A13, the throw in at D10, and (after Black captures) the atari at E9. I think I'd rather be White than Black here.

[Abyssinica]

After white 196, I'm counting 6 black liberties to 3 white ones, so I don't think it came down to ko. Unless there's something I'm missing or you're talking way before that point.

Also, shouldn't be at q15? I hear that's a thing for when the kicker ignores a move over there.