(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?BeginnerExercise266/Solution]AP[GoWiki:2009]
DT[2022-11-09]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise266/Solution

Solution]
PL[B]

AB[mo][mp][rp][mq][nq][qq][rq][mr][or][qr][ls][ms][os][ps]
AW[rm][ln][mn][nn][on][qo][ro][kp][lp][np][op][qp][oq][pq][kr][lr][pr][ks][qs][rs]
CR[qs][rs]
LB[rr:b][sr:a]

;B[sp]C[B1]MN[1]

;CR[qs][rs]
LB[rr:b][sr:a]
)
