(;FF[4]CA[UTF-8]AP[GoGui:1.4.0]
KM[6.5]PB[Natasha and Matthew]PW[Ingrid and Alex]RU[Japanese]
ST[2];B[pd];W[dp];B[pq];W[dc];B[qk];W[ce];B[jd];W[jp];B[cj];W[cn]
;B[cg];W[po];B[qp]
(;W[qo]
C[This is a little heavy ,see the alternative for another possibillity. ]N[14]
;B[op];W[oo];B[np];W[mn];B[lp];W[qm]C[mabey a little slow];B[ok];W[jn];B[pf]
;W[pc];B[qc]
(;W[qb];B[oc];W[pb]
(;B[rd]
(;W[rc]C[Crawling once at P18 is a valid alternative];B[ob]
C[Matthew got a rush of blood to the head and decided to try and kill white, but this is somewhat dangerous.

]
;W[qd];B[qe];W[od];B[pe];W[nc];B[nb]
(;W[nd]
C[As Alex suggested after the game, n17 leeds to an extremely complicated fight, which is why it was dangerous for black to try and kill everything!.
]
;B[mc];W[re];B[qc];W[mb];B[lb];W[qd];B[sd];W[sb]
C[Because of all whites ko local threats fighting the ko looks like a valid alterternative]
;B[rf]
;W[ra];B[lk];W[mk]
C[This incursion is a bit dubious
]
;B[ml];W[ll]
(;B[mj];W[pj];B[pk]C[taking the stone works well for black];W[nk];B[nj];W[nl]
(;B[kl];W[lm];B[lj];W[oj];B[ri];W[md];B[lc];W[lh];B[il]
C[Natasha move is a very good multi -purpose move];W[ng]
(;B[ih]
C[Matt is getting carried away trying to kill stuff, a recurrent theme for this game.
(But in this case it looks fairly sensible as black is strong and in any case is attacking from a useful direction.)
]
;W[ph];B[qh];W[ni];B[le];W[qi];B[rh];W[lf]
C[This is a good move
]
;B[mf];W[kf]
;B[mg];W[mh];B[nf];W[jh];B[ji];W[jg];B[ii];W[hf];B[gc];W[cq]
C[Ingrid has a good habit of playing a big move when not sure what's going on.
]
;B[ed]C[This is another good move by Natasha];W[ec];B[fd];W[je];B[cl];W[kd]
(;B[ke]C[mabey a overplay but is very complex];W[ma];B[la]
(;W[me];B[ld]
(;W[kc];B[ie];W[jf];B[id];W[hg];B[ff];W[fg];B[eg];W[ef];B[fh]
;W[gg]
(;B[df]
(;W[lg];B[og];W[oh];B[kh]
C[Matt is in beserker mode - black is ahead, so there is not need to try to kill this group. Natasha was worried!]
;W[gh]
(;B[fi];W[gi];B[fj];W[gj];B[fk];W[hl]
C[Stuff happened in the centre and both sides lived. (Moves omitted.)
Then black returned to the upper left corner.
]
;B[bc];W[cc];B[bd];W[bb]
(;B[ab];W[be];B[cb];W[ba];B[ca];W[ad];B[aa];W[bb];B[ba]
C[Tricky life-and-death situation. In practice white needs to kill black outright to keep the game countable, but that is a tall order.
]
(;W[cd];B[fb]
C[Black is connected, so white dies. This is where white resigned in the game.
]
)
(;W[fb]
C[This looks like it might be a more-or-less unconditional, though small, life for white.
]
;B[cd];W[dd];B[de];W[ae];B[eb];W[ac];B[fc];W[bb];B[db]
;W[bc];B[gb];W[bg];B[bh];W[ag])
(;W[db]
C[This may lead to a ko - complicated.
]
;B[cd];W[dd];B[de];W[ae];B[da]
(;W[fb];B[fc];W[eb];B[gb];W[ac];B[fa];W[bb];B[bc];W[bd];B[ea]
;W[bb];B[ga];W[bg];B[bh];W[ag];B[bc])
(;W[ac];B[fa];W[ea];B[eb];W[bb];B[bc];W[fb];B[gb];W[ea]
C[This line also seems to be ko.])))
(;B[be]
C[A18 is an overplay, Black should play here, and white will live but Matt REALLY wanted to kill!]
;W[ab]))
(;B[gl]C[this is calmer]))
(;W[eh]
C[Cutting here looks promising for White. If Black tries to save the cutting stone then there is a danger of dying in the centre en masse.
]
;B[dg];W[fi]
(;B[gh];W[hh];B[gi];W[hi];B[gj];W[hj];B[gk];W[hk];B[hl];W[gl]
;B[ej];W[fl];B[ek];W[gn];B[ki];W[kh];B[lg];W[ik];B[jk];W[ij]
;B[jj];W[jm];B[jl];W[hm];B[if];W[ig];B[he];W[km];B[og];W[li]
;B[nh];W[mi];B[qj];W[kj];B[kk];W[im])
(;B[gl];W[gi];B[el];W[ki])))
(;B[eh]C[this looks quite strong]))
(;W[ie]C[looks comfortable for white]))
(;W[ld];B[me];W[kc];B[ie];W[jf];B[jc];W[kb];B[na];W[ka];B[jb]
;W[mb];B[ma];W[pa];B[ne];W[oa];B[gh]
C[if white plays this way, it looks liken black can sacrifice the stones on the edge to take the centre group.]
))
(;B[ld]C[this is a safer alternative]))
(;B[oh]C[A sensible alturnative is this move]))
(;B[kk]C[this is better]))
(;B[nl]C[this looks stronger]))
(;W[mc];B[mb];W[lc];B[nd];W[oe];B[nf];W[ne];B[me];W[md];B[of]
;W[nd];B[lb];W[kc];B[jc];W[kb];B[jb];W[ka];B[le];W[oa]))
(;W[ob]))
(;B[ob];W[qd];B[rc];W[od];B[pe];W[nc];B[nb];W[mb];B[mc];W[oa]
;B[nd];W[na];B[oe];W[rd]
C[this variation is playable for white so black should avoid it]))
(;W[oc]
C[This may be simpler
]
;B[qb];W[od];B[pe];W[lc]))
(;W[op]))
