(;GM[1]FF[4]SZ[19]
GN[Mistake 77]
PC[https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes]AP[GoWiki:2009]
DT[2021-05-08]
C[Diagram from https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes

Mistake 77]
PL[B]

AB[ec][jc][mc][qc][bd][id][pd][be][ce][ee][fe][pe][qe][cf][ef][jf][of][pf][cg][fg][hg][ig][og][bh][fh][bi][ni][bj][ej][hj][lj][ek][lk][el][em][km][bn][co][bp][dp][ep][fq][gq][hq]
AW[cb][bc][dc][kc][cd][dd][qd][rd][de][ke][re][df][ff][hf][kf][qf][dg][eg][kg][pg][rg][ch][eh][ph][ci][ki][dj][fj][kj][dk][kk][mk][dl][ll][cn][dn][pp][bq][cq][dq][eq][nq][fr][gr]
LB[md:a][mh:b][mj:c]

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

;LB[md:a][mh:b][mj:c]
)
