(;GM[1]FF[4]SZ[19]
GN[Justification]
PC[http://senseis.xmp.net/?RTGProblem52/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem52/Solution

Justification]
PL[B]

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

;B[qr]C[B6]MN[6]
;W[sr]C[W7]MN[7]
;B[sp]C[B8]MN[8]
;W[ss]C[W9]MN[9]

;
)
