Save the black group. If you choose to fill in white's liberties, please do so on the squared points - this helped me to reduce the number of variations. Also, please do not take the ko at o5 unless it is absolutely necessary (ie. black is in atari) - this also helped eliminate several variations. Finally, don't play inside your big eye unless you are capturing at least three stones - this qualifies as a useless move, as white will throw in immediately after. Good luck!
(;AB[sp]AB[rp]AB[ro]AB[rn]AB[qn]AB[sn]AB[on]AB[om]AB[pm]AB[nm]AB[mm]AB[mn]AB[ln]AB[kn]AB[jn]AB[im]AB[il]AB[jl]AB[hm]AB[hn]AB[kk]AB[lk]AB[ll]AB[mk]AB[nj]AB[oj]AB[pi]AB[pg]AB[ph]AB[qh]AB[rg]AB[qf]AB[lh]AB[kg]AB[kf]AB[mg]AB[ke]AB[je]AB[ld]AB[mf]AB[md]AB[mc]AB[mb]AB[ma]AB[la]AB[ka]AB[kb]AB[ig]AB[ih]AB[hf]AB[gf]AB[hk]AB[gk]AB[qr]AB[sj]AW[pn]AW[nn]AW[mo]AW[mp]AW[op]AW[oo]AW[qo]AW[qp]AW[pp]AW[qq]AW[rq]AW[pr]AW[or]AW[nr]AW[mr]AW[lq]AW[kq]AW[jq]AW[iq]AW[ko]AW[lo]AW[jo]AW[io]AW[in]AW[ho]AW[hr]AW[gq]AW[gp]AW[go]AW[gn]AW[gm]AW[gl]AW[hl]AW[fn]AW[fk]AW[fj]AW[ek]AW[ik]AW[ij]AW[hi]AW[hh]AW[hg]AW[kl]AW[km]AW[qm]AW[rm]AW[sm]AW[rl]AW[sk]AW[ml]AW[nl]AW[nk]AW[ol]AW[pk]AW[pl]AW[qj]AW[qk]AW[qi]AW[ri]AW[rh]AW[rj]AW[kj]AW[ki]AW[mj]AW[mi]AW[mh]AW[ng]AW[lg]TR[jk]C[Please play triangle as a ko threat.FORCE]AP[goproblems];B[jk];W[po]C[White should not have ignored the threat. Show him why.]
(;B[kh];W[jj])
(;B[ii];W[jj])
(;B[nh])
(;B[ji];W[jj])
(;B[jj];W[ji]
(;B[ii];W[hj]
(;B[li];W[lj]
(;B[kh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og];B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[nh];W[lm];B[jm];W[km]
(;B[ni];W[kh]
(;B[lh];W[lm];B[no];W[np];B[jh]C[RIGHT])
(;B[lf];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[jh];W[lm];B[no];W[np]
(;B[lh]C[RIGHT])
(;B[li]C[RIGHT];W[lh];B[lf]C[RIGHT]))
(;B[li];W[lm];B[no];W[np];B[jh];W[lh];B[lf]C[RIGHT]))
(;B[kh];W[lm]
(;B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[jh]C[RIGHT])
(;B[ni]C[RIGHT])))
(;B[jh]C[RIGHT]))
(;B[ni];W[nh]MA[nf]MA[kh]
(;B[nf];W[lm];B[jm];W[km]MA[kh];B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[jm];W[km]MA[nf];B[nf];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[no]C[NOTTHIS]))
(;B[kh];W[nh]MA[nf]
(;B[nf];W[no])
(;B[no];W[nf]))
(;B[lf];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og];B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[lj];W[li]
(;B[kh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og];B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[nh];W[lm];B[jm];W[km]
(;B[ni];W[lm]
(;B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT])))
(;B[kh];W[lm];B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[no]C[NOTTHIS])
(;B[jh]C[RIGHT]))
(;B[ni];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og]MA[kh]
(;B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[jh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og]MA[kh]
(;B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[no]C[NOTTHIS]))
(;B[jh];W[nh]MA[nf]MA[kh]
(;B[nf];W[lm];B[jm];W[km]MA[kh];B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[jm];W[km]MA[nf];B[nf];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[nh];W[lm]
(;B[jm];W[km]
(;B[ni];W[lm]
(;B[no];W[np]
(;B[li];W[lj]
(;B[jh])
(;B[kh]C[RIGHT]))
(;B[kh];W[nn]
(;B[li]C[RIGHT])
(;B[lj]C[RIGHT]))
(;B[lj];W[li]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[jh];W[lj]
(;B[li];W[kh])
(;B[kh]C[RIGHT])))
(;B[lj];W[li]
(;B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT])))
(;B[li];W[lj];B[no];W[np]
(;B[jh];W[kh])
(;B[kh]C[RIGHT]))
(;B[kh];W[lj];B[no];W[np]
(;B[li]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[jh];W[lj];B[no];W[np]
(;B[li];W[kh]
(;B[lh]C[RIGHT])
(;B[li]C[RIGHT]))
(;B[kh]C[RIGHT])))
(;B[li];W[lj]
(;B[ni];W[kh]
(;B[lh];W[lm];B[no];W[np];B[jh]C[RIGHT])
(;B[lf];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[jh];W[lm];B[no];W[np]
(;B[lh]C[RIGHT])
(;B[li]C[RIGHT]))
(;B[li];W[lm];B[no];W[np];B[jh];W[lh];B[lf]C[RIGHT]))
(;B[kh];W[lm]
(;B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[jh]C[RIGHT])
(;B[ni]C[RIGHT])))
(;B[jh]C[RIGHT]))
(;B[lj];W[li]
(;B[ni];W[lm]
(;B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT])))
(;B[kh];W[lm];B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[no]C[NOTTHIS])
(;B[jh]C[RIGHT]))
(;B[kh];W[lm]
(;B[li];W[lj]
(;B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[jh]C[RIGHT])
(;B[ni]C[RIGHT])))
(;B[lj];W[li];B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[ni];W[lj];B[no];W[np]
(;B[li]C[RIGHT])
(;B[jh]C[RIGHT])))
(;B[jh];W[lm];B[ni];W[lj];B[no];W[np]
(;B[li];W[kh])
(;B[kh]C[RIGHT]))
(;B[no]C[NOTTHIS]))
(;B[no]C[NOTTHIS]))
(;B[nf];W[nh]MA[kh]MA[og]
(;B[og];W[lm];B[jm];W[km]
(;B[li];W[lj];B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh])
(;B[lj];W[li]MA[kh];B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[kh];W[no]))
(;B[no]C[NOTTHIS]))
(;B[lj];W[li];B[ii];W[hj]))
(;B[lj];W[li];B[jj];W[ji];B[ii];W[hj]
(;B[kh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og];B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[nh];W[lm];B[jm];W[km]
(;B[ni];W[lm]
(;B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[kh]C[RIGHT])
(;B[jh]C[RIGHT])))
(;B[kh];W[lm];B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[no]C[NOTTHIS])
(;B[jh]C[RIGHT]))
(;B[ni];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og]MA[kh]
(;B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[jh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og]MA[kh]
(;B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.]))
(;B[no]C[NOTTHIS]))
(;B[li];W[lj]
(;B[kh];W[jj])
(;B[nh];W[jj])
(;B[jj];W[ji];B[ii];W[hj]
(;B[kh];W[nh]MA[nf];B[nf];W[lm];B[jm];W[km]MA[og];B[og];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[nh];W[lm];B[jm];W[km]
(;B[ni];W[kh]
(;B[lh];W[lm];B[no];W[np];B[jh]C[RIGHT])
(;B[lf];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[jh];W[lm];B[no];W[np]
(;B[lh]C[RIGHT])
(;B[li]C[RIGHT]))
(;B[li];W[lm];B[no];W[np];B[jh];W[lh];B[lf]C[RIGHT]))
(;B[kh];W[lm]
(;B[no];W[np]
(;B[ni]C[RIGHT])
(;B[jh]C[RIGHT]))
(;B[kl];W[lm];B[no];W[np]
(;B[jh]C[RIGHT])
(;B[ni]C[RIGHT])))
(;B[jh]C[RIGHT]))
(;B[ni];W[nh]MA[nf]MA[kh]
(;B[nf];W[lm];B[jm];W[km]MA[kh];B[kh];W[lm];B[no];W[np]C[Even though you can easily ignore any threat white makes, it's possible to avoid the ko and prevent white from gaining points elsewhere.])
(;B[kh];W[lm];B[jm];W[km]MA[nf];B[nf]))
(;B[no]C[NOTTHIS])))
(;B[no]C[NOTTHIS]))