Black to play and kill as much as possible. Please flag and/or comment if there is a mistake. Thanks to thuran for a correction!
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AB [ac][bc][cc][dc][ec][fc][gc][hc][ic][jc][kc][lc][mc][nc][oc][pc][qc][rc][sc][ad][ed][fd][jd][od][sd][be][ee][ge][je][oe][re][ef][gf][jf][of][rf][eg][jg][kg][og][dh][eh][jh][oh][ei][fi][ji][oi][si][aj][bj][cj][dj][ej][fj][gj][hj][ij][jj][kj][lj][mj][nj][oj][pj][qj][rj][sj]
AW [bd][cd][gd][hd][ld][md][qd][rd][ae][de][fe][ie][ke][ne][pe][se][df][ff][if][nf][pf][sf][bg][cg][fg][ig][lg][mg][pg][sg][ah][fh][ih][kh][ph][sh][ai][bi][ci][di][gi][hi][ki][li][mi][ni][qi][ri]
(; B [lf]; W [kf] TR [le] C [Follow the marked points for a few moves.][FORCE]; B [le]; W [kd] TR [nd] C [FORCE]; B [nd]; W [me] TR [ng] C [FORCE]; B [ng]; W [mf] C [Okay, now continue without the triangles.]; B [mh]; W [bf]; B [af]; W [ce]; B [ae]; W [ch]; B [dg]; W [gg]; B [hg]; W [gh]; B [ii]; W [hh]; B [id]; W [rh] C [Careful here. Only correct variations have been inputted.] (; B [rg]; W [pi]; B [pd]; W [qe]; B [qg] C [RIGHT][Correct!])(; B [pi] C [RIGHT][Sorry, I was missing this variation when I first posted the problem.]))
(; B [ng]; W [lf])
(; B [mh]; W [lf])
(; B [kf]; W [lf])
(; B [kd]; W [lf])
(; B [le]; W [lf])
(; B [nd]; W [lf])
(; B [nh]; W [mh])
(; B [af]; W [lf] C [That digit was already dead.])
(; B [bf]; W [lf] C [That digit was already dead.])
(; B [ch]; W [lf] C [That digit was already dead.])
(; B [gg]; W [lf] C [That digit was already dead.])
(; B [gh]; W [lf] C [That digit was already dead.])
(; B [rg]; W [lf] C [That digit was already dead.])
(; B [rh]; W [lf] C [That digit was already dead.])
)