I was playing black 9x9, then I did the typical forcing pattern, but when this part was finished, I stumbled accross MANY a blindspot in my reading. B to connect all groups and live big.
(;SZ[9];AB[da]AB[cb]AB[cc]AB[cd]AB[dd]AW[dc]AW[db]AW[eb]AW[fb]AW[ed]AW[fd]AW[gc]AW[gd]AB[cg]AB[eg]AB[gg]C[Black to connect all groups and live big.]AW[ce]AW[de]AP[goproblems];B[be];W[bf]
(;B[cf];W[bd];B[ae];W[ad];B[ee];W[af];B[be];W[ae];B[df];W[be]C[OK. you've followed the normal descend-throw in pattern. Nowhere is where I consider the real problem. Its best if you can read throughthis basic pattern from the beginning and then read on to win from this point.]
(;B[bc];W[ab]C[B made the wrong move and W corrects it with this shape-killing tesuji. Read out thefew variations and you'll see that B loses.])
(;B[ab]
(;W[ba]
(;B[ca];W[bb];B[bc];W[ac];B[aa];W[bb]C[As you see, B dies.];B[bg])
(;B[bc]C[Correct. W gets a little back, but its nothing compared to the
8 stone gift he just gaveRIGHT]))
(;W[bc];B[bb];W[ba]
(;B[bg]C[This move is not as correct as C19, as now there are more ko threats])
(;B[ca];W[ea];B[bg]C[Yes the solution. Least-ko-threats-life.RIGHT]))))
(;B[ee];W[cf]C[Order of moves IS important. now either B will live in 2 piecesor B will crumble completely because there are no ko threats]))