(;GM[1]FF[4]SZ[19]
GN[Variation 1]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem56/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem56/Solution

Variation 1]
PL[B]

AB[bp][cp][dp][ep][fp]
AW[bn][cn][en][ao][fo][gp][fq][gr]
LB[bq:a]

;B[cr]C[B1]MN[1]
;W[aq]C[W2]MN[2]
;B[ap]C[B3]MN[3]
;W[er]C[W4]MN[4]

;LB[bq:a]
)
