I was happy to find a way to live in this tournament game. Later, I was shocked at how *many* ways to live I had missed. (Please leave a comment if you find a way that I have not included -- found one more, so far...)
(;SZ[19]AW[ha]AW[na]AW[hb]AW[kb]AW[lb]AW[mb]AW[ob]AW[qb]AW[hc]AW[nc]AW[hd]AW[id]AW[nd]AW[qd]AW[rd]AW[sd]AW[je]AW[pe]AW[hf]AW[jf]AW[of]AW[qf]AB[ia]AB[pa]AB[ra]AB[ib]AB[pb]AB[rb]AB[ic]AB[kc]AB[mc]AB[oc]AB[qc]AB[rc]AB[sc]AB[jd]AB[od]AB[pd]AB[ke]AB[me]AB[ne]AB[oe]AB[kf]AB[mf]C[White invaded the upper side. Black fought back; but there may be weaknesses White can exploit...]FF[4]GM[1]AP[Jago:Version 4.43]PL[W]GN[VANCOUVR]
(;W[ja];B[jc]
(;W[lc];B[md]
(;W[jb];B[kd]
(;W[la];B[nb]
(;W[nc]LB[jb:A]LB[kd:B]C[
Good move, playing at A -- using sente to eliminate the bigger Black ko threat at B.RIGHT])
(;W[oa];B[ma];W[na];B[oa])
(;W[ld];B[oa]))
(;W[nb];B[la]))
(;W[ld];B[kd];W[la];B[nb]
(;W[nc];B[jb]LB[ka:A]LB[nb:B]C[A and B are false eyes.])
(;W[jb];B[oa]))
(;W[la]LB[jb:B]LB[kd:A]C[
When Black connects A, White lives with B.RIGHT]))
(;W[ld];B[kd]
(;W[lc];B[md]
(;W[la];B[jb])
(;W[nb];B[la]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.]))
(;W[jb];B[la]))
(;W[jb];B[la]
(;W[md];B[lc])
(;W[lc];B[md])
(;W[le];B[lf])
(;W[nb]C[White is dead; only one eye]))
(;W[la];B[jb]))
(;W[jb];B[lc]
(;W[nb];B[la])
(;W[md];B[la])
(;W[la]C[RIGHT]))
(;W[la];B[lc];W[jb]C[RIGHT]))
(;W[la];B[jb]
(;W[ld];B[kd];W[md];B[lc];W[ja];B[jc];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).])
(;W[lc];B[md]
(;W[kd];B[ld];W[ja];B[ka]C[White can live without ko])
(;W[ld];B[kd];W[nb]LB[ka:B]LB[ma:A]C[White is dead -- only one eye (at A... B cannot be more than a false eye).])))
(;W[jb];B[jc]
(;W[ja];B[md]PL[W]
(;W[la]C[RIGHT])
(;W[lc];B[kd];W[la]C[RIGHT];B[nb]
(;W[nc]C[RIGHT])
(;W[oa];B[ma])
(;W[ld];B[oa]))
(;W[nb];B[la]))
(;W[lc];B[md]
(;W[ld];B[kd]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[le];B[lf]
(;W[nb];B[ja]C[Black can tenuki instead])
(;W[la];B[ja])
(;W[ja];B[la])
(;W[oa];B[ja]LB[nb:A]C[Note that A is not an eye])))
(;W[kd];B[ld];W[ja];B[kd];W[la]C[
Roundabout; but I guess it worksRIGHT];B[nb];W[nc]C[RIGHT])
(;W[ja];B[kd]
(;W[la];B[nb]
(;W[nc]C[RIGHT])
(;W[oa];B[ma];W[na];B[oa]))
(;W[nb];B[la])
(;W[ld];B[la]))
(;W[nb];B[kd])
(;W[le];B[kd]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[ka]C[It is hard to make two eyes, if you destroy your own eyespace.])
(;W[nb];B[la]C[White dies even if Black plays tenuki here.]))
(;W[la];B[ja])
(;W[ka]C[Destroying your own eyespace does not help.]))
(;W[ld];B[kd]
(;W[md];B[lc]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[le];B[lf];W[ja];B[la])
(;W[oa];B[la]LB[nb:A]C[Black can even play elsewhere; A is a false eye]))
(;W[lc];B[md]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[nb];B[ja]C[Even if Black plays elsewhere, White will die]))
(;W[ja];B[la]
(;W[md];B[lc])
(;W[lc];B[md])
(;W[le];B[lf])
(;W[nb]C[White is dead; only one eye])))
(;W[la];B[ja];W[ld];B[md]))
(;W[lc];B[md]
(;W[ja];B[jc]
(;W[la]C[RIGHT])
(;W[jb];B[kd];W[la];B[nb]
(;W[nc]C[RIGHT])
(;W[oa];B[ma];W[na];B[oa])
(;W[ld];B[oa]))
(;W[ld];B[kd]
(;W[la];B[jb])
(;W[jb];B[la])
(;W[ka]C[You cannot make two eyes when you destroy your own eyespace.])
(;W[nb];B[la]C[White is dead even if Black plays tenuki instead.]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.]))))
(;W[ld];B[kd]
(;W[le];B[lf]
(;W[nb];B[jb]C[White dies even if Black plays elsewhere])
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la])
(;W[nb];B[la]C[White dies even if Black plays elsewhere]))
(;W[jb];B[jc]
(;W[nb];B[ja]C[Black can tenuki instead])
(;W[la];B[ja])
(;W[ja];B[la])
(;W[oa];B[ja]LB[nb:A]C[Note that A is not an eye]))
(;W[jc];B[jb]
(;W[la];B[jc]C[Black can tenuki instead])
(;W[ka]C[Filling your own potential eye will not help])
(;W[ja];B[jc]C[White has only one eye])
(;W[nb];B[jc]C[Actually, Black should tenuki here]))
(;W[la];B[ja]))
(;W[lf];B[le])
(;W[ja];B[jc]
(;W[jb];B[la])
(;W[la]
(;B[nb]
(;W[nc];B[jb])
(;W[jb];B[oa])
(;W[le];B[lf]))
(;B[jb]))
(;W[le];B[lf]
(;W[nb];B[la])
(;W[jb];B[la])))
(;W[jb];B[jc]
(;W[la];B[ja])
(;W[ja];B[la])
(;W[nb];B[ja]C[White cannot make two eyes even if Black plays tenuki this move.])
(;W[ka]C[You cannot live if you destroy your own eyespace. Talk about dying in gote...])
(;W[le];B[lf]
(;W[nb];B[ja]C[Black can tenuki instead])
(;W[la];B[ja])
(;W[ja];B[la])
(;W[oa];B[ja]LB[nb:A]C[Note that A is not an eye]))))
(;W[nb];B[la]
(;W[kd];B[ld]
(;W[jc];B[jb];W[ka];B[kd];W[ja];B[jc])
(;W[jb];B[jc];W[ja];B[kd])
(;W[ja];B[jc];W[jb];B[kd]))
(;W[jb];B[jc];W[ja];B[kd])
(;W[ja];B[jc];W[ld];B[kd]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.])))
(;W[jb];B[jc]
(;W[ld];B[kd]
(;W[le];B[lf]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[ka]C[White is dead; only one eye]))
(;W[ja];B[la])
(;W[ka]C[White is dead; only one eye])
(;W[la];B[ja])
(;W[nb];B[ja]C[(Actually, Black can tenuki and still kill White)]))
(;W[ja];B[kd];W[la]C[RIGHT];B[nb]
(;W[nc]C[RIGHT])
(;W[oa];B[ma])
(;W[ld];B[oa])))
(;W[kd];B[ld]
(;W[jb];B[jc]
(;W[ja];B[kd];W[la]C[RIGHT];B[nb];W[nc]C[RIGHT])
(;W[la];B[ja])
(;W[ka]C[Oops - you destroyed your own eyespace. Now you cannot make two eyes.]))
(;W[ja];B[jc]
(;W[la]C[RIGHT];B[nb];W[nc]C[RIGHT])
(;W[jb];B[kd];W[la]C[RIGHT];B[nb];W[nc]C[RIGHT]))
(;W[nb];B[la]
(;W[jc];B[jb];W[ja];B[ka];W[ma];B[oa])
(;W[jb];B[jc];W[ja];B[kd])
(;W[ja];B[jc];W[jb];B[kd])))
(;W[jc];B[jb]
(;W[ja];B[ka];W[la];B[kd])
(;W[ld];B[kd];W[nb];B[jc]C[Black can even tenuki this move, and White still cannot get two eyes.]))
(;W[la]
(;B[jb]
(;W[ld];B[kd];W[nb]LB[ka:B]LB[ma:A]C[White is dead -- only one eye (at A... B cannot be more than a false eye).])
(;W[nb];B[kd])
(;W[kd];B[ld];W[ja];B[ka]C[White can live without ko])
(;W[ja];B[ka]C[Find a better way. White can live without resorting to ko.]))
(;)))
(;W[ld];B[kd]
(;W[md];B[lc]
(;W[jb];B[jc]
(;W[la];B[ja])
(;W[ja];B[la])
(;W[le];B[lf];W[ja];B[la]))
(;W[jc];B[jb])
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la])))
(;W[lc];B[md]
(;W[nb];B[ja]
(;W[ka];B[jc])
(;W[jc];B[jb];W[ka];B[jc]C[White is dead; only one eye]))
(;W[jb];B[jc]
(;W[la];B[ja])
(;W[ja];B[la])))
(;W[jb];B[jc]
(;W[ja];B[la]
(;W[md];B[lc])
(;W[lc];B[md])
(;W[le];B[lf])
(;W[nb]C[White is dead; only one eye]))
(;W[lc];B[md]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[nb];B[la]
(;W[ja]C[White is dead; only one eye])
(;W[le];B[lf]
(;W[ka]C[White is dead; only one eye])
(;W[ja]C[White is dead; only one eye]))))
(;W[la];B[ja])
(;W[nb];B[ja]C[Actually, Black can tenuki and White will still die.]))
(;W[jc];B[jb]
(;W[lc];B[md];W[nb];B[jc]C[Black can even tenuki this move, and White still cannot get two eyes.])
(;W[md];B[lc])
(;W[ja];B[jc])
(;W[ka];B[md]C[Black can even tenuki; White still cannot make two eyes.]))
(;W[ja];B[jc]
(;W[jb];B[la]
(;W[md];B[lc])
(;W[lc];B[md])
(;W[le];B[lf])
(;W[nb]C[White is dead; only one eye]))
(;W[la];B[jb])
(;W[md];B[lc]
(;W[la];B[jb];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).])
(;W[jb];B[la])
(;W[nb];B[la]C[Actually, White is dead even if Black plays tenuki.]))
(;W[lc];B[md]
(;W[nb];B[la]C[Black can even tenuki this move, and White still dies.]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.]))
(;W[jb];B[la])
(;W[la];B[jb]))
(;W[nb];B[la]C[Black does not even need this move; White dies anyway.]
(;W[lc];B[md])
(;W[md];B[lc])))
(;W[la];B[jb];W[md];B[lc];W[ja];B[jc];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).]))
(;W[kd];B[ld]
(;W[jb];B[jc]
(;W[lc];B[md]
(;W[nb];B[ja])
(;W[ja];B[kd];W[la]C[RIGHT];B[nb];W[nc]C[RIGHT]))
(;W[ja];B[lc];W[la]C[RIGHT])
(;W[la];B[lc];W[ja]C[RIGHT]))
(;W[ja];B[jc];W[jb];B[oa]
(;W[lc];B[kd];W[md];B[nb]C[White can live without ko])
(;W[nb];B[lc];W[la]C[RIGHT]))
(;W[lc];B[md]
(;W[ja];B[jc]
(;W[la];B[nb];W[nc]C[RIGHT])
(;W[jb];B[kd];W[la]C[RIGHT];B[nb];W[nc]C[RIGHT]))
(;W[nb];B[la]
(;W[jc];B[jb];W[ka];B[kd];W[ja];B[jc])
(;W[jb];B[jc];W[ja];B[kd])
(;W[ja];B[jc];W[jb];B[kd]))
(;W[jb]
(;B[jc]
(;W[la];B[ja])
(;W[ja];B[kd];W[la];B[nb];W[nc]C[RIGHT]))
(;))
(;W[jc];B[jb]
(;W[la];B[jc])
(;W[ja];B[ka];W[la];B[kd]))))
(;W[jc];B[jb]
(;W[ld];B[kd]
(;W[lc];B[md];W[nb];B[jc]C[Black can even tenuki this move, and White still cannot get two eyes.])
(;W[nb];B[jc]C[White is dead. (Actually, Black can tenuki, and White is still dead -- only one eye.)])
(;W[md];B[lc])
(;W[la];B[md]C[White is dead. (Black can even tenuki this move, and White still cannot make two eyes.)]))
(;W[lc];B[md]
(;W[kd];B[ld]
(;W[ja];B[ka];W[la];B[kd])
(;W[ka];B[kd]C[White has only one eye]))
(;W[ld];B[kd];W[nb];B[jc]C[Black can even tenuki this move, and White still cannot get two eyes.])
(;W[ja];B[ka];W[la];B[kd]
(;W[ja];B[jc]C[Only one eye, at A (B and C are false eyes).]LB[ma:a]LB[ka:b]LB[nb:c])
(;W[ld];B[lf]C[Running away will not work. White can live inside.])))
(;W[kd];B[ld];W[lc];B[md];W[la];B[kd])
(;W[md];B[lc]
(;W[ld];B[kd])
(;W[ka];B[ld]C[Black can even tenuki this move, and White still will not get two eyes.]))
(;W[ja];B[ka]
(;W[lc];B[md]
(;W[la];B[kd]
(;W[ja];B[jc]C[Only one eye, at A (B and C are false eyes).]LB[ma:a]LB[ka:b]LB[nb:c])
(;W[ld];B[lf]C[Running away will not work. White can live inside.]))
(;W[ld];B[kd]
(;W[la];B[jc])
(;W[le];B[lf]C[Only one eye, so White dies.]))
(;W[kd];B[ld];W[la];B[kd]))
(;W[la];B[lc]
(;W[ja];B[jc])
(;W[md];B[ld])
(;W[ld];B[md])
(;W[kd];B[ld];W[ja];B[jc]))
(;W[ld];B[kd]
(;W[la];B[jc])
(;W[lc];B[md]
(;W[la];B[jc])
(;W[le];B[lf]C[Only one eye, so White dies.]))
(;W[md];B[lc])
(;W[le];B[lf]))
(;W[kd];B[ld];W[la];B[lc];W[ja];B[jc])))
(;W[le];B[md]
(;W[ld];B[kd];W[ja];B[jc];W[la];B[jb])
(;W[lc];B[kd]
(;W[jb];B[jc]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[ka]C[It is hard to make two eyes, if you destroy your own eyespace.])
(;W[nb];B[la]C[White dies even if Black plays tenuki here.]))
(;W[ja];B[jc]
(;W[jb];B[la])
(;W[la];B[jb])
(;W[nb];B[la]C[Actually, White dies even if Black plays elsewhere.])
(;W[ld];B[lf]C[Running away does not help... White must live inside.]
(;W[nb];B[la])
(;W[jb];B[la]))
(;W[ka]LB[nb:A]C[Destroying your own eyespace will not help. A is not an eye.])
(;W[ma]C[You certainly cannot live if you destroy your own eyespace.]))
(;W[jc];B[jb]
(;W[la];B[ld]C[White is dead even if Black tenuki.])
(;W[ka]C[You will not get two eyes that way.])
(;W[ja];B[jc])
(;W[ld];B[lf]C[White can live inside -- running away will not work.]
(;W[la];B[jc]C[Black can tenuki instead])
(;W[ka]C[Filling your own potential eye will not help])
(;W[ja];B[jc]C[White has only one eye])
(;W[nb];B[jc]C[Actually, Black should tenuki here])))
(;W[la];B[jb])
(;W[ka];B[jc]C[Now that you have destroyed the White eyespace, Black can even tenuki instead.])
(;W[ld];B[lf]
(;W[nb];B[jb]C[White dies even if Black plays elsewhere])
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la])
(;W[nb];B[la]C[White dies even if Black plays elsewhere]))
(;W[jb];B[jc]
(;W[nb];B[ja]C[Black can tenuki instead])
(;W[la];B[ja])
(;W[ja];B[la])
(;W[oa];B[ja]LB[nb:A]C[Note that A is not an eye]))
(;W[jc];B[jb]
(;W[la];B[jc]C[Black can tenuki instead])
(;W[ka]C[Filling your own potential eye will not help])
(;W[ja];B[jc]C[White has only one eye])
(;W[nb];B[jc]C[Actually, Black should tenuki here]))
(;W[la];B[ja]))
(;W[nb];B[la]C[White dies even if Black tenuki]))
(;W[jb];B[jc]
(;W[ja];B[la]
(;W[lc];B[kd])
(;W[nb];B[lc]C[Actually, White dies even if Black tenuki]))
(;W[la];B[ja])
(;W[lc];B[kd]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[nb];B[la]C[Actually, Black can tenuki and still kill]))
(;W[nb];B[lc]C[White dies even if Black plays elsewhere])
(;W[ld];B[lc]
(;W[ja];B[la])
(;W[la];B[ja])))
(;W[jc];B[jb]
(;W[la];B[lc]C[White dies even if Black tenuki])
(;W[lc];B[ld]
(;W[ka];B[kd])
(;W[ja];B[ka];W[la];B[jc])
(;W[la];B[kd]C[White dies even if Black plays elsewhere.]))
(;W[ja];B[jc]
(;W[lc];B[kd]C[White has only one eye])
(;W[la]LB[nb:A]LB[ka:B]C[White has only one eye. A and B cannot become eyes for White.])))
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la]
(;W[lc];B[kd])
(;W[nb];B[lc]C[Actually, White dies even if Black tenuki]))
(;W[lc];B[la]))
(;W[la];B[jb])
(;W[ka];B[jc]))
(;W[ka];B[lc]
(;W[jb];B[jc])
(;W[jc];B[jb]
(;W[ja];B[jc])
(;W[nb];B[jc]C[White dies even if Black plays elsewhere.]))
(;W[nb];B[jc]C[White dies even if Black plays tenuki.])
(;W[md];B[ld])
(;W[ja];B[jc])
(;W[ld];B[kd]))
(;W[nb];B[la]
(;W[ld];B[kd]
(;W[jb];B[jc]
(;W[lc];B[md]
(;W[ja]C[White is dead; only one eye])
(;W[le];B[lf]
(;W[ka]C[White is dead; only one eye])
(;W[ja]C[White is dead; only one eye])))
(;W[md];B[lc]))
(;W[ja];B[jc]
(;W[lc];B[md]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.]))
(;W[md];B[lc]))
(;W[jc];B[jb]
(;W[lc];B[md])
(;W[ja];B[jc])
(;W[md];B[lc]))
(;W[lc];B[md])
(;W[md];B[lc]
(;W[jb];B[jc])
(;W[ja];B[jc])
(;W[jc];B[jb])))
(;W[lc];B[md]
(;W[ld];B[kd])
(;W[jb];B[jc]
(;W[ja];B[kd])
(;W[ld];B[kd]
(;W[ja]C[White is dead; only one eye])
(;W[le];B[lf]
(;W[ka]C[White is dead; only one eye])
(;W[ja]C[White is dead; only one eye]))))
(;W[ja];B[jc]
(;W[jb];B[kd])
(;W[ld];B[kd]))
(;W[jc];B[jb]
(;W[ja];B[ka]
(;W[ld];B[kd])
(;W[ma];B[kd]))
(;W[ld];B[kd])
(;W[kd];B[ld]
(;W[ka];B[kd];W[ja];B[jc])
(;W[ja];B[ka];W[ma];B[oa])
(;W[ma];B[oa]))
(;W[ka];B[kd]))
(;W[ka];B[jc];W[ld];B[kd]))
(;W[jc];B[jb]
(;W[ka];B[lc])
(;W[ja];B[ka]
(;W[ld];B[kd])
(;W[lc];B[md];W[ma];B[kd])
(;W[kd];B[ld])
(;W[md];B[lc]C[Black can even afford to tenuki]))
(;W[lc];B[md]
(;W[ja];B[ka]
(;W[ld];B[kd])
(;W[ma];B[kd]))
(;W[ka];B[kd])
(;W[ld];B[kd]))
(;W[ld];B[kd]
(;W[lc];B[md])
(;W[ja];B[jc])
(;W[md];B[lc])))
(;W[jb];B[jc]
(;W[lc];B[md];W[ja];B[kd])
(;W[ja];B[lc]))
(;W[ja];B[jc]
(;W[lc];B[md]
(;W[jb];B[kd])
(;W[ld];B[kd]
(;W[le];B[lf])
(;W[jb]C[White has only one eye.])))
(;W[jb];B[lc])
(;W[ld];B[kd]
(;W[lc];B[md])
(;W[md];B[lc])))
(;W[ka];B[jc]
(;W[ld];B[kd])
(;W[lc];B[md];W[ld];B[kd])))
(;W[md];B[lc]
(;W[jb];B[jc]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[ld];B[kd]
(;W[ja];B[la])
(;W[la];B[ja])))
(;W[jc];B[jb];W[ld];B[kd])
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la])
(;W[ld];B[kd]
(;W[la];B[jb];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).])
(;W[jb];B[la])))
(;W[ld];B[kd]
(;W[jc];B[jb])
(;W[jb];B[jc]
(;W[la];B[ja])
(;W[ja];B[la]))
(;W[ja];B[jc]
(;W[la];B[jb];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).])
(;W[jb];B[la]))
(;W[la];B[jb];W[ja];B[jc];W[nb];B[sd]LB[ka:B]LB[ma:A]C[White is dead; only one eye (at A -- B is a false eye).]))
(;W[la];B[jc]
(;W[ja];B[jb])
(;W[jb];B[ja])
(;W[ld];B[kd])))
(;W[ma];B[lc]
(;W[jb];B[jc])
(;W[ja];B[jc])
(;W[ld];B[kd]))
(;W[oa];B[kd]
(;W[jb];B[jc]
(;W[ja];B[la])
(;W[la];B[ja])
(;W[lc];B[md])
(;W[md];B[lc]
(;W[ja];B[la])
(;W[la];B[ja])))
(;W[jc];B[jb]
(;W[lc];B[md];W[ja];B[jc])
(;W[ja];B[jc]))
(;W[ja];B[jc]
(;W[la];B[jb])
(;W[jb];B[la])
(;W[lc];B[md]
(;W[la];B[jb])
(;W[jb];B[la]))
(;W[md];B[lc]
(;W[la];B[jb])
(;W[jb];B[la])))
(;W[lc];B[md])
(;W[md];B[lc]
(;W[jb];B[jc]
(;W[ja];B[la])
(;W[la];B[ja]))
(;W[jc];B[jb])
(;W[ja];B[jc];W[la];B[jb]))))