Screw Puzzle Jim: the order is the puzzle

Screw Puzzle Jim is a strange one, because there is no dexterity in it at all. You tap a bolt, it comes out, it goes on a plate. A five year old can do the physical part perfectly.

The whole difficulty lives in the sequence. And unlike most puzzle games, a wrong move here does not cost you a bit of score, it can make the level unwinnable while it still looks perfectly fine.

Read the board before you touch anything

The temptation is to start unscrewing whatever is nearest and see what happens. Resist it for thirty seconds.

Before your first tap, look at:

• How many colours are on the board, and how many plates you have for them
• Which bolts are underneath a plank, and which plank they are holding up
• Whether any colour has only one plate available

That third one is the killer. If a colour has one plate and it fills up with the wrong thing, you are finished, and the game will let you carry on for another ten taps before you find out.

Empty plates are the resource, not the bolts

Think of it as a stack problem. Your plates are your working space. Every bolt you remove has to go somewhere, and if everything is half full you have no room to manoeuvre.

So the goal of the opening is not to remove bolts. It is to complete plates and get them off the board, because a completed plate is space returned to you.

• Prefer taps that finish a plate over taps that start a new one
• Avoid putting the only bolt of a colour onto a fresh plate early
• If two moves are equal, take the one that leaves more empty slots

Planks hold each other up

The bolts are holding planks, and the planks are covering other bolts. Removing the wrong bolt drops a plank onto something you needed access to, or leaves a plank hanging by one bolt in a place you cannot reach.

Trace it before you tap. Which plank does this bolt hold? What is under that plank? If a plank is held by two bolts of a colour you have no plate for, then those bolts are not available yet, and anything under that plank is not available either. Work elsewhere until it is.

Undo is not cheating, it is the mechanic

Some players treat undo as a failure. It is not. In a game where a single move can lock a board, undo is how you explore.

Use it deliberately: make the move you are unsure about, look at what it did to your plates and your planks, and undo it if you did not like the answer. That is not luck, that is reading the board one move deeper than you could in your head.

Hints work the same way. If you have been stuck for two minutes, a hint tells you which corner of the board you were misreading, and you will usually spot the rest yourself.

When you are properly stuck

If a level has beaten you three times, the mistake is almost certainly in the first five moves, not the last five. Restart and change the opening.

Players tend to replay a level identically for ten attempts and then blame the level. The board is solvable. Your third move was wrong.

The short version

• Look at the whole board before the first tap
• Count plates per colour, and be careful with any colour that has only one
• Complete plates to free up space rather than opening new ones
• Trace which plank a bolt is holding and what is underneath it
• Use undo to explore, and restart to fix a bad opening rather than a bad ending

The satisfying part of this game is the moment the order clicks and the whole board comes apart in one clean run. That moment comes from the reading, not the tapping.