(;GM[1]FF[4]SZ[19]
GN[Mistake 63]
PC[https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes]AP[GoWiki:2009]
DT[2021-04-29]
C[Diagram from https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes

Mistake 63]
PL[B]

AB[gb][ib][jb][ob][gc][hc][ic][lc][oc][pc][hd][ld][nd][pd][ke][le][me][pe][df][lf][pf][dg][jg][lg][qg][rg][dh][gh][ih][jh][ph][ci][gi][hi][ii][ni][pi][qi][cj][lj][mj][oj][pj][kk][pk][jl][kl][dm][im][jm][nm][hn][ln][mn][nn][on][bo][co][ho][no][oo][po][cp][dp][ep][fp][kq][mq][nq][pr]
AW[fb][pb][qb][fc][jc][nc][qc][dd][gd][id][jd][kd][qd][ce][ge][he][je][cf][gf][jf][kf][mf][qf][rf][cg][gg][hg][ig][kg][mg][og][pg][ch][hh][lh][oh][ki][li][mi][oi][ij][kj][qj][jk][qk][hl][il][ql][hm][om][cn][gn][in][pn][qn][go][mo][qo][bp][gp][mp][np][op][pp][bq][cq][dq][fq][gq][qq]
LB[dn:a][kp:b][qr:c]

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

;LB[dn:a][kp:b][qr:c]
)
