An easy Klotski puzzle is a compact 4 by 5 sliding-block challenge with six disclosed rectangles and a shortest solution of exactly six atomic moves, making it one of the most approachable entry points into the genre. Instead of guessing your way through crowded, undocumented boards, you get a fully published starting layout, exact integer coordinates for every piece, and an independently proven minimum that confirms no shorter route exists. The fixture in the Klotski is original rather than copied, the piece footprints stay fixed, and the winning condition is clear: guide the 2 by 2 goal block to a two-column opening centered along the bottom edge. Because every accepted action moves one rectangle by exactly one orthogonal cell, beginners can plan ahead, undo experiments, and watch the route unfold move by move. The board is large enough to feel like a real puzzle and small enough that a new player can hold the entire state in their head. For anyone hunting for an easy Klotski puzzle to start with, that combination of disclosure and short proof sets a calm, learnable tone from the first tap.
What makes this Klotski one of the easy sliding puzzles to start with
Most Klotski-style games scale up quickly: more blocks, more rows, and dozens or hundreds of candidate routes. Beginners searching for an easy Klotski puzzle want the opposite: a board small enough to read at a glance, a handful of pieces, and a solution short enough to verify by hand. This Klotski delivers on all three. The board is 4 columns wide and 5 rows tall. Only six rectangles share the space, leaving nine empty cells available for movement. The shortest possible win is exactly six atomic moves, an independent breadth-first search has verified it, and the same search explores 3,234 unique board states before confirming that nothing shorter works.
The transparency matters just as much as the scale. Every starting position is published as integer coordinates, and every piece has a fixed footprint that never rotates. The goal begins at x=1, y=0 with a 2 by 2 footprint. The two vertical pillars begin in the outer columns at the top. The Slider, Guard, and Gate sit in row 2. If you can read a coordinate, you can plan a route before pressing a single key. That combination of small board, disclosed coordinates, and a proven minimum is what separates this fixture from the busy historical Klotski boards where a beginner can wander without ever knowing whether they have moved closer to the exit.
The board and pieces: six disclosed rectangles on a 4 by 5 grid
Each rectangle in the Klotski has a stable identity, a stable size, and a stable starting coordinate. There are three sizes: one 2 by 2 goal, two 1 by 2 vertical pillars, and three 1 by 1 blocks called Slider, Guard, and Gate. The columns are numbered 0 through 3 and the rows are numbered 0 through 4, with the origin at the top-left corner. The table below shows the piece identity, the keyboard shortcut that selects it, the footprint, and the published starting position.
| Piece | Number key | Footprint | Starting position |
|---|---|---|---|
| Goal | 1 | 2 by 2 | x=1, y=0 |
| Left pillar | 2 | 1 by 2 | x=0, y=0 |
| Right pillar | 3 | 1 by 2 | x=3, y=0 |
| Slider | 4 | 1 by 1 | x=1, y=2 |
| Guard | 5 | 1 by 1 | x=0, y=2 |
| Gate | 6 | 1 by 1 | x=2, y=2 |
The six pieces together occupy 11 distinct cells, which leaves nine empty cells available for movement. Because every footprint is axis-aligned and integer-based, every legal move has a deterministic answer: place the rectangle's full footprint one cell up, down, left, or right, and accept the move only if no cell in that footprint leaves the board or overlaps another piece. Anything else is rejected atomically, leaving the position, the move count, the score, and the completion flag exactly as they were before the attempt.
The target sits at the bottom edge. The exit footprint is a 2 by 2 area with its top-left corner at x=1, y=3, occupying columns 1 and 2 in the bottom two rows. The opening itself is marked beneath those two central columns and described in text for non-visual navigation, so you always know where the goal needs to land.
How to play the Klotski
The Klotski plays entirely with pointer taps, on-screen direction controls, and keyboard shortcuts, and both input methods produce identical moves. Follow the steps below to clear the bottom exit in the proven six moves.
- Open the Klotski and orient yourself to the 4 by 5 board. The bottom edge of the board shows the two-column exit opening, centered below columns 1 and 2. The goal block sits at the top, flanked by two vertical pillars.
- Select the Slider by tapping it on the board or pressing the number key 4. The selected piece gains a visible outline and its name appears in the status area.
- Press the Down control or the Down arrow key once. The Slider drops one cell into row 3, freeing the cell at x=1, y=2. The move count rises by one.
- Press the Left control or the Left arrow key once. The Slider shifts into column 0 of row 3, fully clearing the goal's lower-left lane.
- Tap the Gate on the board or press the number key 6 to select it, then press the Right control or the Right arrow key once. The Gate slides into column 3 of row 2, clearing the goal's lower-right lane.
- Select the Goal with a tap or the number key 1, then press Down three times in succession. The goal descends from y=0 to y=1, then y=2, then y=3, where it lands in the exit footprint and the score snaps to exactly 1,000.
If at any point a move is rejected because the destination footprint would leave the board or hit another piece, nothing changes. Use the Undo control under the direction pad, or press U, Delete, or Backspace, to roll back the last accepted move. Illegal attempts do not create history entries, so a single undo always restores the exact previous state. Holding an arrow key is safe: repeated keydown events are ignored, so a piece cannot race through several unreviewed positions.
The proven six-move route, step by step
The route you just played is not just one solution; it is the shortest possible solution. An independent breadth-first search oracle flattens every board state into a coordinate vector and tries Up, Down, Left, and Right for every rectangle without using the production move helpers. It deduplicates by serialized vector, expands 1,470 queue entries, and discovers 3,234 unique states before the first winning configuration dequeues. That winning configuration sits at depth six, which means no path of zero through five atomic moves can reach the exit. The same oracle also confirms a specific route: Slider down, Slider left, Gate right, then Goal down three times.
Each step in that route clears one or two central cells. Slider's first move drops into row 3 and then shifts into the leftmost column, freeing the lower-left lane that the goal will cross. Gate's rightward shift opens the lower-right lane. With both central cells empty, the 2 by 2 goal can step down through y=1 and y=2 into the disclosed exit footprint at y=3. The path also illustrates why one-cell accounting matters: any intermediate shortcut that tries to move the goal before both lanes are open fails the collision check, which is why the minimum is six moves and not four.
If you want to see why every other move order fails, treat the search as your proof. Pick a piece and try to slide it into a cell that another piece already occupies: the move is rejected atomically. Try to leave the board: rejected. Try to cheat the goal diagonally into the exit: rejected, because rectangles only move orthogonally one cell at a time. The same rules that let you plan also keep the search honest.
Atomic moves, Undo, and safe experimentation
Beginners learn best when mistakes are cheap. The Klotski keeps an immutable history snapshot for every accepted move and never records rejected attempts. Pressing Undo, either the full-width control under the direction pad or the U, Delete, or Backspace keys, removes the newest snapshot and restores its exact coordinates, which lowers the move count by one and brings you back to the previous legal board. A move followed by Undo returns you to the published starting state, which means you can replay the same first move, try an alternative, and compare without ever losing your place.
Selection is also forgiving. Tap any rectangle on the board or its numbered selector button, then use the four large direction controls. The selected piece is outlined and named in the status line. Keyboard users press number keys 1 through 6 to select Goal, Left pillar, Right pillar, Slider, Guard, or Gate in the disclosed order, then use the arrow keys to move. Both paths route through the same atomic move logic, so a pointer experiment and a keyboard experiment produce the same outcome. For a closer look at how the one-cell rule is enforced, the related guide on whether Klotski pieces can rotate or move more than one cell walks through the same atomic-move contract from a rules angle.
Scoring, replaying, and what comes next
Reaching the exit is terminal. The winning move sets the score to exactly 1,000 and freezes piece selection, movement, and Undo. There is no speed bonus, move penalty, hint cost, partial credit, or random modifier, so the only way to score 1,000 is to land the goal in the disclosed exit footprint in any legal sequence of one-cell moves. The shortest such sequence is six moves, which is what the independent search proved.
To replay, use Restart. Restart restores all six original positions, selects the goal, empties history, resets the move count, and returns the score to zero. Best scores are saved locally in your browser, so you can track clean six-move runs over time without an account. The game runs entirely client-side: no board state, move history, results, or interaction data is uploaded, no remote API is called, and no device permission is required. If you want a similar small, beginner-friendly grid to try next, the Easy Hidato Puzzles guide on a 4x4 number path uses the same beginner-friendly tone with a small grid and a verified solution.