(;GM[1]FF[4]SZ[19]
GN[Var 4]
PC[http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems]AP[GoWiki:2009]
DT[2014-03-27]
C[Diagram from http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems

Var 4]
PL[B]

AB[mn][nn][on][lo][po][mp][np][pp][mq][pq][nr][or]
AW[mm][nm][om][pm][ln][pn][ko][mo][qo][kp][qp][lq][oq][qq][lr][mr][pr][qr]
CR[mo]
LB[lp:a]

;B[op]C[B1]MN[1]
;W[no]C[W2]MN[2]
;B[oo]C[B3]MN[3]

;CR[mo]
LB[lp:a]
)
