(;AB[pd]AW[dd]AB[qp]AW[dq]AB[oq]AW[qj]AB[do]AW[co]AB[dp]AW[cp]AB[eq]AW[cn]LB[cq:A]LB[dr:B]C[Play A if you believe you can capture the white D3 stone or B if you cannot.FORCE]AP[goproblems] (;B[dr];W[cq]C[Defend at F4.FORCE];B[fp]C[Well done ! Black's thickness works well with the keima in the lower-right corner, while white still needs a move on the left side.RIGHT]) (;B[cq];W[dr] (;B[cr];W[er] (;B[fq];W[fr];B[gr];W[br]C[This move is tesuji for white. Moreover, a cut at G3 is dangerous for black.] (;B[ds];W[bq]C[End of the line. Black should have played B.]) (;B[bs];W[bq]C[End of the line. Black should have played B.]) (;B[cs];W[bq]C[End of the line. Black should have played B.]) (;B[bq];W[cs] (;B[ar];W[bs] (;B[aq];W[bp]C[End of the line. Black should have played B.]) (;B[bp];W[bo] (;B[aq];W[ao]C[End of the line. Black should have played B.]) (;B[ao];W[aq];B[ap];W[an]C[End of the line. Black should have played B.]) (;B[ds];W[es] (;B[gs];W[ap]C[End of the line. Black should have played B.]) (;B[aq];W[ao]C[End of the line. Black should have played B.])) (;B[fs];W[ap]C[End of the line. Black should have played B.])) (;B[ap];W[bp]C[End of the line. Black should have played B.]) (;B[fs];W[bp]C[End of the line. Black should have played B.]) (;B[ds];W[es] (;B[gs];W[bp]C[End of the line. Black should have played B.]) (;B[bp];W[bo] (;B[gs];W[ap]C[End of the line. Black should have played B.]) (;B[aq];W[ao]C[End of the line. Black should have played B.])))) (;B[bp];W[bo];B[ar];W[bs] (;B[aq];W[ao]C[End of the line. Black should have played B.]) (;B[ao];W[aq];B[ap];W[an]C[End of the line. Black should have played B.]) (;B[ds];W[es] (;B[gs];W[ap]C[End of the line. Black should have played B.]) (;B[aq];W[ao]C[End of the line. Black should have played B.])) (;B[fs];W[ap]C[End of the line. Black should have played B.])))) (;B[fr];W[fq]C[Wrong ! Black stones are all split appart.])) (;B[bq];W[cr];B[br];W[er];B[fq];W[fr];B[gr];W[bs]C[White wins the capturing race. Moreover, black has a bad aji at G3.])))