I really like the concept. A little nitpicky, but the pace is a tad too slow, and the game would benefit from making moving from tile to tile and crafting bombs a little faster. Also, it seems like you could get yourself into a situation where neither bomber could reach one another which would cause a stalemate.
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Thanks for the feedback! it is surely appreciated. That was indeed my first concern when designing the game... By definition there are many ways it is no longer possible to hit the opponent. But the way I tried to solve that, is that in such cases, the player that is on the largest island wins. This way you are still encouraged to not be cut off.