(;AB[ia]AB[ib]AB[hc]AB[hd]AB[gd]AB[fe]AB[ff]AB[eg]AB[dg]AB[bg]AB[cg]AB[cf]AB[be]AB[ed]AB[dd]AB[dc]AB[eb]AW[hb]AW[ga]AW[gc]AW[fc]AW[fd]AW[db]AW[cd]AW[ce]AW[de]AW[ee]AW[cc]AW[ge]AW[bf]TR[ha]AW[ha]C[White just played the triangled stone. Black to make a reduction in white's territory. (my first problem, comments appreciated)]AP[goproblems] (;B[ia]) (;B[fb];W[ec];B[gb];W[ea];B[fa]C[Nice!RIGHT]) (;B[ec];W[fb];B[ea];W[da]) (;B[gb];W[fb]C[didn't do much...]) (;B[fa];W[ec]C[White must save as much as possible];B[gb]C[];W[fb];B[ea];W[da];B[ga]C[Nice reduction, but you can do a little better.RIGHT]) (;B[da];W[ec];B[cb]C[Ko.]) (;B[ea];W[ec]))