An easy way is to put a locked door in the room & solving the puzzle gives you a key to that door. On a similar note, block puzzles should be something that you have to do once per puzzle. Nothing makes me more frustrated in a quest than when I've screwed up a block puzzle & the quest designer has made the room that it's in closed off with shutters, forcing me to die, respawn elsewhere & have to backtrack. If the player can't solve a push block puzzle or has pushed the blocks in such a way that it makes it impossible to complete the puzzle, then you should have a way for the player to reset the puzzle, either via a 'reset' combo or by leaving through an open door & coming right back.

However, you shouldn't make the puzzles so difficult that they 'break' the game. In fact, many of them will be fairly difficult.

While it makes the 'rules' quite obvious, it doesn't make the puzzles any less difficult. In my quest, moveable blocks will have arrows on them that indicate the direction(s) they can move. (If all of a sudden the player tries to push a white block and it no longer moves four-ways, it breaks this 'logic.') If you have the same kind of blocks in a later dungeon, they should abide by the same 'rules'.

You don't really give the player any hints but that's fine - it doesn't take long through some trial and error for the player to discover this on his/her own.

For example, let's say early on, you have white blocks that are pushable four ways and blue blocks that are pushable only horizontally in one dungeon. This can be different for each quest but within the same quest, it should be universal throughout the quest.

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