(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[0.00]TM[] PW[White]PB[Black]AW[jc][cd][ed][bg]AB[dg][cj][do]LB[bg:1]C[how should black answer white 1?] (;B[dc]LB[cc:B][ec:C][dd:A][cf:D]CR[dc]C[RIGHT testing move. if white answers at A, black can later live in the corner. if white answers at B or C, black cuts starting with D.]) (;B[bf]CR[bf] ;W[cf]CR[cf] ;B[cg]CR[cg] ;W[be]CR[be] ;B[bh]CR[bh] ;W[af]TR[cj]CR[af]C[white's corner is huge and the marked stone is bad]) (;B[bh]CR[bh] ;W[bf]CR[bf]C[black needs another move here, and will have bad shape while giving white a large corner]) (;B[ch]CR[ch]C[slow and gote]) (;B[cf]CR[cf] ;W[bf]CR[bf] (;B[dc]CR[dc] ;W[dd]CR[dd]C[hard to live in the corner after the first exchange]) (;B[ce]CR[ce] ;W[be]CR[be])) (;B[de]CR[de] ;W[dd]CR[dd] (;B[bf]CR[bf] ;W[cf]CR[cf] (;B[be]CR[be] ;W[ce]CR[ce] ;B[cg]CR[cg] ;W[bh]CR[bh]) (;B[cg]CR[cg] ;W[be]CR[be] ;B[bh]CR[bh] ;W[af]CR[af]C[good for white])) (;B[cg]CR[cg] ;W[bf]CR[bf])) (;B[ce]CR[ce] ;W[be]CR[be]C[helps white]) (;B[cg]CR[cg] ;W[bf]CR[bf]C[helps white]))