(;GM[1]FF[4]SZ[19]
GN[Black hasn't gained]
PC[http://senseis.xmp.net/?ReversiblePlayLossAndGain]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ReversiblePlayLossAndGain

Black hasn't gained]
PL[B]

AB[ib][ic][fd][gd][hd][id]
AW[jb][jc][jd][kd][ld][md]
LB[ia:a][kb:b]

;B[ja]C[B1]MN[1]
;W[ka]C[W2]MN[2]

;LB[ia:a][kb:b]
)
