(;GM[1]FF[4]SZ[19]
GN[A different B3 alters the result, but still an easy ko for White]
PC[http://senseis.xmp.net/?BeginnersMistakes]AP[GoWiki:2009]
DT[2011-12-11]
C[Diagram from http://senseis.xmp.net/?BeginnersMistakes

A different B3 alters the result, but still an easy ko for White]
PL[B]

AB[gp][dq][eq][gq][dr][fr]
AW[cp][dp][ep][fp][cq][fq][cr]

;B[cs]C[B1]MN[1]
;W[bs]C[W2]MN[2]
;B[es]C[B3]MN[3]

;
)
