(;GM[1]FF[4]SZ[19]
GN[Reverse sente]
PC[http://senseis.xmp.net/?EndgameClamp]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?EndgameClamp

Reverse sente]
PL[W]

AB[on][po][mp][np][op][mq][pq][mr][nr][or]
AW[qm][qn][pp][qp][rp][pr][qr]
LB[oq:a][os:b][ps:b]

;W[qq]C[W1]MN[1]

;LB[oq:a][os:b][ps:b]
)
