(;GM[1]FF[4]SZ[19]
GN[Base getting reinforced]
PC[http://senseis.xmp.net/?ElementaryCourse]AP[GoWiki:2009]
DT[2009-10-12]
C[Diagram from http://senseis.xmp.net/?ElementaryCourse

Base getting reinforced]
PL[W]

AB[fp][fq][jq]
AW[dn][dp][np][pp][eq]

;W[lq]C[W1]MN[1]
;B[jo]C[B2]MN[2]

;
)
