(;GM[1]FF[4]SZ[19]
GN[Moves 21 to 30]
PC[https://senseis.xmp.net/?StandardOpening4]AP[GoWiki:2009]
DT[2020-06-23]
C[Diagram from https://senseis.xmp.net/?StandardOpening4

Moves 21 to 30]
PL[B]

AB[oc][qd][de][cf][pl][qm][mq][pq][pr][qr]
AW[dc][cd][ce][pm][po][dp][qp][oq][qq][or]

;B[op]C[B1]MN[1]
;W[pp]C[W2]MN[2]
;B[nq]C[B3]MN[3]
;W[np]C[W4]MN[4]
;B[oo]C[B5]MN[5]
;W[nn]C[W6]MN[6]
;B[os]C[B7]MN[7]
;W[on]C[W8]MN[8]
;B[nr]C[B9]MN[9]
;W[ql]C[W10]MN[10]

;
)
