the least, and out of curiosity, the boy urgently sought to open the seemingly normal door. Harold didn’t even notice how he got close to the house with his hand on the door handle, but however hard he tried, it didn’t budge an inch. After a few vain attempts, Harold eventually left for the safety of his home. As soon as he got home, the boy asked his parents about the house. To the boy’s surprise, they assured him that the house had been standing there since they moved in. This made the whole story even more puzzling. Only after a sleepless night did Harold realize that he had no choice but to go to school after all.
Later that day, he came across something new on the school noticeboard - a poster recruiting students for the math club. Harold instantly decided to join it, as he believed it might help him solve the mystery. To get into the club, he had to answer the following riddle:
I have keys but no locks.
I have space, but no room.
You can enter, but you can't go outside.
What am I?
Harold confidently barged into the clubroom and exclaimed “It’s a musical keyboard!". The people inside seemed annoyed to be disturbed, yet they accepted his answer, which granted him membership in the club. At the beginning of the activity, Harold was supposed to introduce himself to other members by using one item that represented him. The boy immediately grabbed his magical cube and told me that this conundrum was the start of his biggest journey. Everyone was fascinated and started asking questions while inspecting the cube. Without the slightest idea of what might make it special, they advised Harold to find the missing piece first. The boy then told them about the strange-looking house next door that seemed to have sprung from thin air. None of the club members had ever seen that house before, so they agreed to meet at Harold's house on Saturday to think things over. After such a long day, Harold just wanted to finally come home.
.
As usual, his parents asked the boy to go down to the basement and fetch a box of things that hadn't been unloaded yet. He did so, but as he was carrying the box upstairs, he tripped and fell over something so hard that everything in the box shattered.
161