(;GM[1]FF[4]SZ[4:3]
GN[17-19]
PC[http://senseis.xmp.net/?ShortestAToBProofGames3x4/Solution]AP[GoWiki:2009]
DT[2015-03-24]
C[Diagram from http://senseis.xmp.net/?ShortestAToBProofGames3x4/Solution

17-19]
PL[B]

AB[aa][ba][ca][ab][bb][cb]
AW[cc]

;B[dc]C[B17]MN[17]
;W[bc]C[W18]MN[18]
;B[db]C[B19]MN[19]

;
)
