(;GM[1]FF[4]SZ[19]
GN[Var 3]
PC[http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems]AP[GoWiki:2009]
DT[2014-03-27]
C[Diagram from http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems

Var 3]
PL[B]

AB[ql][om][pm][rm][nn][sn][no][np][nq][oq][sq][pr][qr][rr][sr]
AW[on][rn][oo][ro][op][qp][sp][pq][qq][rq]
LB[qo:a]

;B[po]C[B1]MN[1]
;W[pn]C[W2]MN[2]
;B[qn]C[B3]MN[3]
;W[pp]C[W4]MN[4]

;LB[qo:a]
)
