J.G.Island has four solution modes:
Advanced modes are designed for fast COMPLETION of the whole search that excludes existence of dual(s). All solutions mode involves heuristical runs and a run without heuristics, thus, usually its completion will take much longer than a (hybrid) brute force analysis. However most probably the (first) solution will be found sooner in All Solutions mode than in (hybrid) brute force. Brute force analysis is a simple analysis without any heuristics. Hybrid brute force is a variant of brute force in which the search for the first solution is made in heuristical analysis. As soon as the first solution is found, the analysis turns into a simple brute force analysis. The intention of Hybrid Brute Force analysis is to: a) find the solution in a run optimized for finding solution(s), b) exclude existence of dual(s) in a run optimized for finding refutations. On the other hand, All Solutions analysis will usually have to perform the full heuristics relaxation process. Heuristics selection dialogue is displayed if Ctrl key is pressed while clicking Start button or a dedicated menu item is selected (Advanced->Select heuristics and find all solutions) An example is shown on the diagram below: 
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