(;GM[1]FF[4]SZ[19]
GN[White's move creates a threat; so Black defends]
PC[http://senseis.xmp.net/?PGBWhyThereIsNoUsefulMoveLeft]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?PGBWhyThereIsNoUsefulMoveLeft

White's move creates a threat; so Black defends]
PL[W]

AB[dm][fm][gm][hm][km][nm][pm][rm][sm][cn][dn][gn][mn][nn][on][pn][rn][bo][co][do][go][ko][lo][mo][oo][po][ro][cp][gp][lp][mp][pp][qp][cq][gq][hq][rq][br][dr][fr][hr][pr][qr][bs][cs][ds][es][gs][hs][is][qs][rs]
AW[bm][cm][em][im][jm][lm][mm][om][qm][bn][en][fn][hn][in][kn][ln][qn][eo][ho][jo][no][dp][fp][hp][kp][np][op][aq][dq][fq][iq][jq][kq][lq][mq][nq][oq][pq][qq][er][ir][kr][or][js][os][ps]
LB[sr:a]

;W[ss]C[W1]MN[1]
;B[rr]C[B2]MN[2]

;LB[sr:a]
)
