100 mozkocvičných hádanek - Logické problémy, matematické úkoly a slovní hříčky – Eastaway Rob (2020)

If you don't want dust to settle on your brain cells and your neurons to wither from boredom, get this book. A hundred witty riddles that never get old and will stretch your synapses to the breaking point. With this book, you'll never be bored!