We has shown the existence of a solution for Sakurai's transformed system (6) with boundary conditions (4), initial conditions (7) and condition (5), provided that γ=7. The existence in this paper is local in y, i.e., in [0,y] for some y ∈ (0,1) and the solution is continuous in y, namely, it tends to the similarity solution as y → 0. In order to consider this problem, it is usual to apply a hydrodynamic code. Since this result can be used as its exact initial condtion, we can use this result as an accuracy test to hydrodynamic code computations. Also we can utilize our results to consider the explosion in the water.
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