Puzzle #224 from the New Scientist is:
I collect Russian dolls, the type where each doll can be opened to reveal a smaller one inside. I am particularly fond of my simple, single-coloured ones, which come in sets of five (and, unusually, have a hollow smallest doll).

Puzzle #212 from the New Scientist is:
“Why isn’t the sound working?”, Mum muttered as she hit the mute key on the remote control.
“You’ve probably got the wrong remote, Mum”, Sam said.

This week’s puzzle goes as follows:
My son’s book of mathematical magic tricks includes this one:
Think of a whole number from 1 to 50. Add 9 and double the result.

Another puzzle from the New Scientist - #134: Can you work out which keyboard to hack?. It goes as follows:
James Blond edges along the corridors of the supervillain’s base, and comes to two locked doors, each with a keypad that requires a four-digit code.

Solution to #131 “The Paradise Club” puzzle from the New Scientist. This week (No 3352 - 18 September 2021) the New Scientist posted the following puzzle:
Down at The Paradise Club, Gus and Bart take it in turns to roll a pair of dice.

Attempt to solve #115 “A random robot” puzzle from the New Scientist. This week (No 3336 - 29 May 2021) the New Scientist published the following puzzle:
Roman the test robot is being given one final roam before being consigned to the scrapheap where he can rust in peace.