Extremely HUGE storehouses of puzzles for $ale
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( a.k.a. Ching-Foo -- Dad's Puzzler -- Ma's Puzzle -- The Moving Puzzle -- The Flying Puzzle -- George Washington Puzzle
Eskimo Pie -- The Starry Puzzler -- The Leech Puzzle -- Square Root -- Tit-Bits Teaser #5 )
There are slight variations among the many types of 'block' sliders out there in puzzledom . If yours looks like the first picture, then this is the solution for you .
Intent : . . . transfer the positions of blocks #1 and #3 .
The end result will only transfer blocks #1 and #3, not reposition the rest of the blocks to their original places !