(;GM[1]FF[4]SZ[19]
GN[Better defense]
PC[https://senseis.xmp.net/?BeginnerExercise321/Solution]AP[GoWiki:2009]
DT[2023-02-15]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise321/Solution

Better defense]
PL[B]

AB[po][qo][ro][so][np][op][nq][nr][rr][ns][qs]
AW[pp][qp][rp][sp][oq][or][pr][qr]
CR[ns]
LB[mr:a][ss:b]

;B[qq]C[B1]MN[1]
;W[ps]C[W2]MN[2]
;B[rq]C[B3]MN[3]
;W[pq]C[W4]MN[4]
;B[rs]C[B5]MN[5]

;CR[ns]
LB[mr:a][ss:b]
)
