Boltnest

How to play

How to Play Boltnest

Start from the visible top colors, protect at least one useful empty position, and move only a nut that opens a productive next move.

1. 01

   Start a level and scan the color at the top of every bolt. Look for empty bolts and any nearly complete single-color stack.

2. 02

   Click or tap one exposed top nut. Lower nuts cannot be selected until the nuts above them move.

3. 03

   Choose a destination bolt that can accept the selected nut. Use an empty bolt as temporary space when it helps reveal another color.

4. 04

   After the nut moves, inspect both bolts. The newly exposed color may create a better next pairing than the color you just moved.

5. 05

   Build single-color bolts while keeping room to rearrange. Use Undo for a move that clearly blocks progress, then try a different order.

About the game

The hidden nut makes every move a small gamble

Boltnest is a color-sorting puzzle built around vertical bolts. Only the nut at the top of a stack can be moved; a lower nut stays hidden or blocked until the ones above it leave. The objective described in the official listing is to arrange nuts so each completed bolt holds one color. Empty bolts are useful temporary space, but using them without a plan can leave you unable to move a necessary color later. The puzzle rewards a careful sequence rather than fast tapping.

At the start of a level, the most useful information is the color of every exposed top nut and the location of any empty bolt. Selecting a top nut and then an empty destination moves the nut, changes which color is visible beneath it, and gives you a chance to correct the move with Undo. This is the central loop: choose an accessible nut, place it where a later move remains possible, and inspect the new top colors. The official listing mentions three undos, so watch the available count before relying on correction.

Controls

Controls for Boltnest

Mouse or touch

Select an accessible top nut, then select its destination bolt.

Undo button

Reverse a recent move when available.

Useful strategy

Keep the sorting puzzle flexible

Plan with the colors you can actually reach

The difference between a top nut and a buried nut is the central rule. A blue nut may be visible lower in a stack, but you cannot act on it until the nuts above it are moved away. Begin by recording the accessible top colors in your head. If there are two top nuts of the same color, a direct consolidation might free a bolt. If a useful lower color is buried, ask what must move first and where those obstructing nuts can go without creating another blockage.

A simple move can serve two goals at once: put a nut closer to its color group and expose a new nut at the source. Moving a top nut into an empty bolt demonstrates the second effect. After any move, inspect the source immediately. The newly visible nut can change the best plan. If you keep following the arrangement you imagined before the move, you may overlook a much shorter route that the new top color makes possible.

Do not assume you know every hidden color. A partly obscured stack invites guesses, but a sorting plan that depends on an unseen nut being a particular color is fragile. Prefer moves that work under several possible reveals, or use an available empty bolt to uncover information safely. When a hidden color appears, update the plan. The game asks you to manage both space and information, so an apparently quiet reveal may be more useful than a dramatic reshuffle.

Treat empty bolts as working space

An empty bolt is a temporary desk for a nut that blocks another. Once you place something on it, that desk is no longer empty. This is why a move to an empty bolt should have a purpose: expose a valuable lower color, make a matching group, or prepare a legal transfer. Moving any convenient nut into the gap can feel like progress but may leave no space to take the next top nut off a mixed stack.

Think one move past the destination. If you place a blue nut in the empty space, where can it go when you need that bolt again? If another blue top is available, they may combine. If no blue path is visible, consider whether a different nut would create more flexibility. You do not need to solve the entire board mentally. A two-move check is enough to catch many dead ends: where does this nut go now, and what newly exposed nut can move next?

A single-color bolt can act like a finished column, but it may also receive more of the same color when the game allows it. Keep such a destination in mind so matching nuts have a natural home. Avoid mixing an unrelated top nut onto a promising group solely because there is room. That might bury the color you were consolidating and consume a move to undo later. The exact legality of a destination is shown by the current game state; use that feedback rather than forcing a move.

Choose a sequence that reveals and groups

Suppose two exposed nuts have the same color and one rests above a different color you need. Moving it to its match both strengthens a color group and releases the lower nut. That is usually more productive than moving a third, unrelated nut simply because the target bolt is open. Look for this double benefit first. If no such move exists, use a temporary bolt to reveal one stack, then reassess. The board rewards a deliberate sequence more than a quick shuffle.

When several orders seem possible, favor the order that keeps the most future destinations open. If moving a nut would cap a bolt whose top color you soon need, choose another source. If a source stack is nearly empty, clearing it might create a new working bolt. An extra empty bolt increases your ability to separate mixed colors. This is a common pattern in sorting games: temporary space is valuable because it lets you rearrange without trapping the next needed piece.

After a move, check that the nut went where you intended and that a new top color is visible when expected. If the board does not change, the destination may be incompatible or the selected nut may not be accessible. Pause instead of rapidly clicking more bolts. Recheck the selected top nut and choose a legal target. The visible board state is the reliable guide to what actually happened, and Undo offers a way to correct a move that closes off needed space.

Use a bad move to diagnose the blockage

If every bolt seems blocked, identify the nut that most urgently needs to move and why it cannot. Is its destination covered by another color? Are all temporary bolts occupied? Did a previous move bury a nearly finished group? Answering that question tells you which earlier decision to change. If Undo is available, reverse the latest move that created the blockage. The official listing describes a limited number of undos, so choose a correction that restores space or exposes a useful color.

If you have used an empty bolt for a color with no visible partner, consider moving that nut to a compatible stack as soon as one opens. Keeping temporary spaces clear is more valuable than preserving a tidy-looking but strategically useless arrangement. Do not repeat a failed sequence at the same speed after restarting. Change one early transfer and observe whether it reveals a better top color or keeps an empty destination available.

If a click appears ignored, ensure you selected the top nut rather than a lower one. Then click a destination that the game permits. A selection highlight or pressed button alone does not complete a move; look for the nut to change bolts. On mobile, a deliberate tap on each target is safer than a series of quick taps while the board is animating. When in doubt, read the current level’s visible hints before using a limited correction.

Choose a related logic challenge

Boltnest is best for a short thinking break when you want to manage order and temporary space. Screw Out Puzzle also uses bolts, but its task is removing colored fasteners into matching boxes while keeping storage available. Turnline Relaxing Puzzle asks you to reason about turning a path rather than sorting a stack. Choose Boltnest when you like uncovering the next color, and switch to either related game when you want a different visual rule.

The reliable habit here is to separate a legal move from a useful move. Many top nuts can be shifted, but the best one creates a color group, exposes an important hidden nut, or preserves working room. Start each level with that question, make one deliberate transfer, and inspect the new top colors. Over a few moves, the board becomes less mysterious because every reveal replaces a guess with visible information.