primer intento de resolver las repeticiones multiples del generador aleatorio de las piezas
Merge branch 'wassin'
Revert "Merge branch 'wassin'"

This reverts commit c16405558a89efe068980030c9370f6a9d180cd2, reversing
changes made to 27bd252c290086dec1a737b25c3f55e4871a0773.