(;GM[1]FF[4]SZ[19]
GN[Mistake 261]
PC[https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes]AP[GoWiki:2009]
DT[2021-10-13]
C[Diagram from https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes

Mistake 261]
PL[B]

AB[bc][oc][bd][ed][fd][gd][pd][ce][de][ee][ie][je][qf][gh][pj][hm][jm][km][in][ln][go][mo][ep][gp][kp][mp][pp][cq][dq][hq][lq][nq][lr]
AW[ab][bb][mb][dc][ec][fc][hc][nc][dd][jd][kd][ne][ef][ch][eh][fj][fl][dm][qm][hn][jn][kn][bo][jo][ko][lo][cp][hp][ip][lp][bq][jq][kq]
LB[qk:b][qo:a]

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

;LB[qk:b][qo:a]
)
