(;GM[1]FF[4]SZ[19]
GN[Mistake 263]
PC[https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes]AP[GoWiki:2009]
DT[2021-10-12]
C[Diagram from https://senseis.xmp.net/?DieterVerhofstadt/2021ABCOfMistakes

Mistake 263]
PL[W]

AB[ec][fc][gc][hc][kc][bd][cd][dd][eg][eh][ei][cj][ck][dk][el][jp][dq]
AW[eb][fb][gb][bc][cc][dc][pd][qf][dh][di][dj][ej][fj][ek][pp][nq]

;W[ij]C[W1]MN[1]
;B[fl]C[B2]MN[2]

;
)
