Decent Idea!
I liked the idea of diffusing Bomberman's bombs, and you did it relatively well. It was fun to play to an extent, and it worked! However it wasn't as good a game as it could have been - you should perhaps have made each bomb have a timer - longer than in Bomberman, but still short enough to provide a challange... maybe each bomb could have a different time, meaning you have to plan your route according to the most urgent.
Also, you should have included powerups, or if not - you should have made different types of tools for different types of bombs. And perhaps if you REALLY wanted to make it interesting, you could have levels where you actually see Bomberman planting the bombs, and you have to diffuse his bombs and trap him...
Well those are just random suggestions - you could basically think of a lot more things yourself I'm sure... so I do hope you improve on this idea. It is a good one!