(;AB[ca]AB[bb]AB[bc]AB[cc]AB[dc]AB[ed]AB[fd]AB[gd]AB[id]AB[ic]AB[jb]AB[kc]AW[ba]AW[cb]AW[db]AW[fc]AW[gc]AW[hc]AW[ib]AW[ha]C[white to play...]AP[goproblems]
(;W[ec];B[eb];W[da];B[ea]
(;W[fb];B[ca];W[fa];B[db];W[gb]TR[ba]C[thanks to the marked stone D18 and G18 are miai for white... well done ;)RIGHT])
(;W[fa];B[ca];W[fb];B[db];W[gb]C[RIGHT]))
(;W[eb];B[gb]
(;W[ga];B[fb];W[fa];B[da];W[ea];B[ca])
(;W[fb];B[ga];W[fa];B[da];W[ea];B[ca])))