GUTSCHEIN
Bitte haben Sie einen Moment Geduld, wir legen Ihr Produkt in den Warenkorb.
Bitte haben Sie einen Moment Geduld, wir legen Ihr Produkt in den Warenkorb.
"...Made my head hurt! -- Isaac Newton...Doesn't bug me! -- Grace Hopper...Rang my chimes! -- Alexander Graham BellThese innovative, witty, and utterly outrageous brainbusters engage reasoning power while honing problem-solving skills. Beginning with easier puzzles, then getting progressively harder, this tantalizing collection will increase brain power with each puzzle conquered. Also included is a special Solutions section that gives a detailed answer to each brainbuster."
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