(;GM[1]FF[4]SZ[19]
GN[Failure]
PC[http://senseis.xmp.net/?RTGProblem51/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem51/Solution

Failure]
PL[W]

AB[on][qn][no][ro][lp][np][rp][kq][nq][qq][kr][nr][pr][rr][ps]
AW[pp][qp][mq][oq][rq][sq][mr][or][ns][os][qs]

;W[pq]C[W1]MN[1]
;B[qr]C[B2]MN[2]
;W[sr]C[W3]MN[3]
;B[rs]C[B4]MN[4]

;
)
