(;GM[1]FF[4]SZ[19]
GN[Diagram 23.3: 2-2 not key point]
PC[http://www.go4go.net/]
AP[GoWiki:2009]
DT[2023-12-04]
C[Diagram from http://www.go4go.net/

Diagram 23.3: 2-2 not key point]
PL[W]

AB[pp][qp][pq][pr]
AW[qm][oo][po][qo][op][oq][mr][or]
LB[qs:a]

;W[rr]C[W1]MN[1]
;B[rq]C[B2]MN[2]
;W[qr]C[W3]MN[3]
;B[ps]C[B4]MN[4]

;LB[qs:a]
)
