(;GM[1]FF[4]SZ[19]
GN[Countering central-group mirror go]
PC[http://senseis.xmp.net/?CounteringMirrorGo/Discussion]AP[GoWiki:2009]
DT[2012-01-03]
C[Diagram from http://senseis.xmp.net/?CounteringMirrorGo/Discussion

Countering central-group mirror go]
PL[W]

AB[aa][ba][ca][da][ea][fa][ga][ha][ia][ja][ka][la][ma][na][oa][pa][qa][ra][sa][ab][sb][ac][ad][rd][ae][re][af][rf][ag][rg][ah][rh][ai][ii][ji][ri][aj][ij][kj][rj][ak][jk][kk][rk][al][rl][am][rm][an][rn][ao][ro][ap][rp][aq][rq][br][cr][dr][er][fr][gr][hr][ir][jr][kr][lr][mr][nr][or][pr][qr][rr]
AW[bb][cb][db][eb][fb][gb][hb][ib][jb][kb][lb][mb][nb][ob][pb][qb][rb][bc][sc][bd][sd][be][se][bf][sf][bg][sg][bh][sh][bi][si][bj][sj][bk][sk][bl][sl][bm][sm][bn][sn][bo][so][bp][sp][sq][ar][sr][as][bs][cs][ds][es][fs][gs][hs][is][js][ks][ls][ms][ns][os][ps][qs][rs][ss]

;W[bq]C[W1]MN[1]
;B[rc]C[B2]MN[2]

;
)
