(;GM[1]FF[4]SZ[19]
GN[(WWB)]
PC[https://senseis.xmp.net/?BQM606]AP[GoWiki:2009]
DT[2023-06-14]
C[Diagram from https://senseis.xmp.net/?BQM606

(WWB)]
PL[W]

AB[ag][bg][dg][eg][bh][ch][di][cj][ck][cl][cm]
AW[af][bf][cf][df][cg][bk][bl][bm]
SQ[ak][al][am]
LB[dh:a]

;W[bj]C[W1]MN[1]
;W[bi]C[W3]MN[3]
;B[ai]C[B4]MN[4]

;SQ[ak][al][am]
LB[dh:a]
)
