Klotski

The classic sliding-block puzzle — free the big square

🧱 Slide the blocks to free the big square!

Spatial · Ages 6+

Like every game on iplay.free, Klotski is completely free — no ads, no sign-up, and no downloads. It runs right in your browser, so there's nothing to install and nothing to buy. With no ads and no account, it's safe to hand to a child and easy to pick up any time.

How to play Klotski

Goal: Get the big red square (★) out through the gap in the bottom wall.
How to play: Drag a block into the empty spaces — it can slide around corners as long as its path is clear. Or tap a block, then tap where it should go. Blocks never jump over each other.
Win: The big square slides out. Moving one block — however far, around any corners — counts as one move. Match the fewest moves without hints for three stars!

Game modes

Pick the level that suits you — Klotski offers 4 ways to play:

Easy
Medium
Hard
Expert

Skills you'll practise

spatial reasoning, planning, problem solving, patience

Did you know?

🏯 In China this puzzle is called 华容道 (Huarong Pass), after a narrow road in the old tale Romance of the Three Kingdoms. The puzzle itself is only about 100 years old — and its famous classic layout needs at least 81 moves!

Frequently asked questions

Is iplay.free really free?: Yes — every game is completely free, with no ads, no sign-up, and no downloads. There's nothing to buy and no premium tier: it's free forever.
Do I need an account or sign-up?: No. Games play instantly in the browser — no login, no email, and no personal details are ever required.
Are there any ads?: None. iplay.free runs no ad networks, so there are no banners, no pop-ups, and nothing to mis-tap — which is part of why it's safe to hand to a child.
Is it safe for kids?: Yes. Because there are no ads, no chat, and no account, there's nothing inappropriate to stumble into and no personal details to hand over. You can pass a device to a child without worrying about pop-ups or accidental purchases.
Do I need to download or install anything?: No. Everything runs in your web browser — there's no app to install and no updates to manage. Just open a game and play.
What devices and browsers work?: Any modern browser — Chrome, Safari, Firefox, or Edge — on a phone, tablet, laptop, or desktop, including school Chromebooks.