(;AB[cr]AB[cp]AB[dp]AB[fo]AB[cq]AB[dr]AW[er]AW[eq]AW[dq]AW[fq]AW[fp]AB[ep]AB[go]AW[hq]AW[eo]AW[cn]AW[ck]AW[dk]AW[el]AW[fk]AB[ek]C[Black to play and capture the cutting stone.]TR[eo]AP[goproblems] (;B[en];W[do] (;B[cm] (;W[bm];B[bn];W[dm];B[dn]C[Black 1 puts the cutting stone in atari, and if White draws out at 2, Black 3 and 5 are the cross-cut tesuji.RIGHT]LB[en:1]LB[do:2]LB[cm:3]LB[bm:4]LB[bn:5]LB[dm:6]LB[dn:7]) (;W[dn];B[dm];W[em];B[fn];W[bm];B[bn]C[RIGHT])) (;B[dn];W[co])) (;B[dn];W[do];B[co];W[en];B[dm];W[cm]))