Solutions

Here are some shapes with area 144 and their solutions :

R(4r,9) :

               

According to the piece(s) which rest(s), we indicate the solution using the following codes :

For the above rectangle R(4r,9), we say that the solution is a a2-solution ; so we can try find a1, b1, a or b-solution.

D(r,3) :                                                                                           a1-solution

                    

TT(7r/r) :                                                                                     a2-solution

 

Les 3 piques :

      a1-solution

Les 2 piques :                                                                         a1-solution

                 

HE((2r,4r)/12)unu :                                                                    a2-solution

                   

Solutions of the challenges