(;GM[1]FF[4]SZ[19]
GN[Mistake]
PC[http://senseis.xmp.net/?DoorGroupExercise2/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DoorGroupExercise2/Solution

Mistake]
PL[B]

AB[en][dp][ep][cq][fq][cr][fr][bs][gs]
AW[em][fm][dn][fn][co][bp][gp][hp][bq][br][gr][hr]
LB[ds:a]

;B[dr]C[B1]MN[1]
;W[cs]C[W2]MN[2]
;B[eq]C[B3]MN[3]
;W[es]C[W4]MN[4]
;B[fs]C[B5]MN[5]

;LB[ds:a]
)
