# A sliding block puzzle

The picture to the left shows the puzzle in its initial state. If you click on it, the puzzle itself will appear, in a new browser tab.

### Problem statement

Remove the 1-tile [by clicking on it]. Then arrange the others [you move a tile to the adjacent
space, if there is one, by clicking on it] all in the right order ( 2 3 4 5 6 7 8 9 ) and all the right way up.

To the right is a picture of the puzzle in its solved state.

### Hints about the metapuzzle:
show

### Restated puzzle: show

The puzzle statement is correct, and, I hope, easy to understand correctly. The trick is that in the
puzzle's initial state, what looks like a 6 is an upside-down 9, and vice versa. No-one told you that
the tile to the right of the 4 was a 6; and it isn't.

### Solution to puzzle: show

You can't swap the 4 with the 5 while leaving the other tiles in their original positions. But you can
swap the 4 with the 5 *and* the 6 with the 9 while leaving the others in their original positions.

Arrange to send the 6-tile and the 9-tile each twice around the top of the puzzle
without sending any other tiles around. Then you have a simple and easily solved sliding-block puzzle.

## Comments: show

I built this puzzle. It's not the problem *statement* that you need to reconsider, it's your assumptions about the starting position. The misdirection is deliberate.

**Source: **Nick Wedd. For more SVG sliding block puzzles, see http://www.olfrec.com/sbp/

This is one of several pages on puzzles and metapuzzles
.