(;GM[1]FF[4]
CA[UTF-8]
AP[Quarry:0.2.0]
SZ[19]
ST[2]
RU[Japanese]
KM[0.0]
PB[Черные]
PW[Белые]
AB[ec:fc][hb:hc][gd:id][mc:md][kd:ke][le][if]
AW[ha][mb:nb][cc][gb:gc][ib:ic][kc:lc][dd][ld][fd:fe]
(;B[jc];W[jb];B[fb];W[ga];B[kb];W[jd];B[lb];W[la];B[jc];W[kc]
C[Position A: only one continuation for black at M17];B[lc]
;W[ka]
(;B[ja];W[ia]
(;B[fa];W[ja])
(;B[ma];W[na];B[je];W[ja];B[oc];W[fa]
(;B[ea];W[db];B[jc];W[ma];B[eb];W[da])
(;B[db];W[dc]
(;B[cb];W[ed];B[eb];W[bb];B[ba];W[ea];B[bc];W[ab];B[ac];W[da]
;B[aa];W[bb];B[ab];W[ca])
(;B[eb];W[cb]))))
(;B[fa];W[ia];B[ma];W[na];B[je];W[ma];B[jc];W[ja];B[oc]C[+]))
(;B[fb];W[ga];B[jc];W[jb];B[kb];W[jd];B[lb];W[la];B[jc];W[kc]
C[Position B = Position A, but here F19 and L19 are marked as correct \
which was not the case in Position A]
(;B[lc];W[ka]
(;B[ja];W[ia]
(;B[fa];W[ja])
(;B[ma];W[na];B[je];W[ja];B[oc];W[fa]
(;B[ea];W[db];B[jc];W[ma];B[eb];W[da])
(;B[db];W[dc]
(;B[cb];W[ed];B[eb];W[bb];B[ba];W[ea];B[bc];W[ab];B[ac];W[da]
;B[aa];W[bb];B[ab];W[ca])
(;B[eb];W[cb]))))
(;B[fa];W[ia];B[ma];W[na];B[je];W[ma];B[jc];W[ja];B[oc]C[+]))
(;B[ka]C[+])
(;B[fa]C[+]))
)
