(;GM[1]FF[4]SZ[4:3]
GN[Sacrifice for ko]
PC[http://senseis.xmp.net/?SmallBoardGo/ThreeByFourSolution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SmallBoardGo/ThreeByFourSolution

Sacrifice for ko]
PL[B]

AB[cb][bc]
AW[ca][bb]

;B[ba]C[B1]MN[1]
;W[aa]C[W2]MN[2]
;B[ab]C[B3]MN[3]
;W[ac]C[W4]MN[4]
;B[cc]C[B5]MN[5]
;W[db]C[W6]MN[6]

;
)
