Subgrid
SubGrid is a recursive puzzle game where the solutions to the previous levels become the tiles for the next one.
Place tiles to connect all targets to the power supply. You can edit previous levels to change your tiles.
The last level is nearly impossible to solve - or is it? ;)
Let me know in the comments if you beat the game!
Comments
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Wohoo! Finally got it. Fantastic game!
Note: 6-3 is the last level, there's nothing after it. Spoilers, hint and solution, below.
SPOILERS:
HINT: The key is 5-2. You want to get two "passthrough" paths in a right angle to each other, each that goes from one end to the opposite end, with the third path being at an "inner" right angle to the cross made by those two other paths. This, together with the straightforward "corners" solution to 5-1, will give you a lot of flexibility in making paths on the level 6 stages, but also making paths that are easy to keep track of. 5-3 has at least two solutions I found; but, if 5-2 is done appropriately, then neither of those 5-3 solutions are needed for 6-3.
SOLUTION:
Nice. Only ever finished the game twice sofar, so I know that feeling ;)
But if you want more challenges: this isn't the only solution. In fact, each puzzle in level 6 has 6 possible solutions (even more if you count the various solutions that you can make in level 5). Also, Level 4-2 has a second (non obvious) solution that makes Level 5 and 6 especially hard.
I did find that solution for 4-2 when going as far back as possible to get to 6-3, but after trying to use that solution just for 5-1, I thought, "wow, this is useless, let me go back and use the normal solution." But it is actually possible to solve everything in 5 and 6 with that??
I was happy to just get the straightforward solution for 6-3, without having to keep all the contingent paths in my head… but I guess that's what makes the challenge!
Can you confirm, what the first stage with multiple solutions is? Does everything before 4-2 only have one solution? (4-2 is the first stage where I found more than one)
Level 3-1 is technically the first stage with multiple solutions, but it does not affect the next level. Level 4-2 is the first stage which really changes things.
oh yes I did see that trivial alternative for 3-1, I meant nontrivial multiple solutions, but you got that :). Thank you for confirming!
Out of curiosity, do you have a backend system for verifying solvability and solutions? If so, is it brute force, or something more elegant, even heuristics that cut down on the size of the possible solution space?
I do not have an automated solution. I do however have a couple of theories that checkout:
I know that in order to get a solution with crossed lines, you need at lest one tile with crossed lines.
I also know that a set of tiles can solve any puzzle if every line can reach every position (assuming the size of the puzzle is big enough). That's also why I slowly increase the puzzle size as the puzzles get more complicated.
This rules! I could see myself losing a lot of time to this, especially if the recursive mechanic gets used more as you go further in (actually requiring you to go back and fix your previous solutions a lot). Can I ask how many levels there are? Made it to world 6 so far.
There are 6 Levels. For Level 6 you will have to go back and change some solutions.
Personally, I can't consistently beat Level 6, but I know that it's always solvable.
I was thinking of adding an endless mode, but then decided to release the game without it. The difficulty spike is just too hard to actually be fun.
Nice! Length feels pretty good to me for where it's at then . Gonna go back and give level 6 another shot 😁
Bruh. This broke my brain...Or maybe I'm just too stubborn to go back and fix my past mistakes
In a good way, I might add. I've never seen a game like this--and I love it!