The way I see it, there are three levels of assistance you can give to a player outside the game, i.e. not including the in-game hints. These are:
1. Hints
2. Walkthrough
3. Solution
Hints are exactly that. They do not give you a solution to a puzzle, just some pointers to what to do and where to look to find the in-game hints. They are usually cryptic and I usually provide one or two red herrings to trap people that are cheating.
A walkthrough is a descriptive explanation of what to do with a suggested strategy, the preferred path through the puzzle tree, what to do, what to avoid, an explanation of various alternatives, an explanation of how the scoring works and so on.
A solution is a minimum path command-by-command solution with no elaboration.
For the game jam, I am considering providing coded hints for my game, but I don't think you should provide a walkthrough or a solution until the jam is over. If Adventuron was to request a walkthrough for the judges, then that's a different issue.
By all means, provide a "Have you tried?" section on the game page, but it is damn near impossible to write one of these without giving spoilers. You don't want people reading this or the walkthrough before they've even played the game.