(;AB[nf]AB[oe]AB[pf]AB[pg]AW[of]AW[og]AW[kk]AB[jk]AB[hj]AW[ca]AW[eb]AP[goproblems];B[oh];W[ng];B[mg];W[nh];B[ni];W[mh];B[lh];W[mi];B[mj];W[li];B[ki];W[lj];B[lk];W[kj]
(;B[kl];W[jj]
(;B[ji];W[ij]
(;B[ik];W[ii];B[ih];W[hi];B[gi];W[hh];B[hg];W[gh];B[fh];W[gg];B[gf];W[fg];B[eg];W[ff];B[fe];W[ef];B[df];W[ee];B[ed];W[de];B[ce];W[dd];B[dc];W[cd];B[bd];W[cc];B[cb];W[bc]
(;B[ac];W[bb];B[ab];W[db])
(;B[bb];W[ac]
(;B[ab];W[ad]
(;B[ae]C[RIGHT])
(;B[be]C[RIGHT])
(;B[bf];W[be];B[cf];W[db]))
(;B[ad]C[RIGHT];W[ab]C[RIGHT])))
(;B[ii];W[ik]))
(;B[ij];W[ji]
(;B[jh];W[kh])
(;B[kh];W[mf])))
(;B[jj];W[kl]))