lunes, 13 de junio de 2016

Can you solve "Einstein’s Riddle"? - Dan Van der Vieren

Can you solve the locker riddle? - Lisa Winer

Can you solve the frog riddle? - Derek Abbott

Can you solve the temple riddle? - Dennis E. Shasha

Can you solve the prisoner hat riddle? - Alex Gendler

¿Puedes resolver el enigma del puente? - Alex Gendler