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

1-4]
PL[B]

AB[aa][ba][ca][bb][cb][ac][dc]
AW[da]

;W[cc]C[W2]MN[2]
;W[db]C[W4]MN[4]

;
)
