The year in every player means when they completed the transfer and have played for both teams. (Example: Marcos Alonso played for Madrid in 2002 but in 2022 he moved to Barca concluding the requirement)
Van a aparecer 10 números al azar entre el 1 y el 100 sin saber cuál viene después. Tu misión es ponerlos en orden. Pero cuidado, si un número no se puede colocar, la prueba termina...