# de disques? 3
  -     |     |   
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-----   |     |   
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  |     |     |   
 ---    |     |   
-----   |     -   
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  |     |     |   
  |     |     |   
-----  ---    -   
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  |     |     |   
  |     -     |   
-----  ---    |   
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  |     |     |   
  |     -     |   
  |    ---  ----- 
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  |     |     |   
  |     |     |   
  -    ---  ----- 
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  |     |     |   
  |     |    ---  
  -     |   ----- 
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  |     |     -   
  |     |    ---  
  |     |   ----- 
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Nombre de déplacements = 7