

Einstein's Riddle
Compare this product across 2 stores. Lowest product price now 6,50 €.
Latest price observation: 29/10/2026, 02.25
Riddles, paradoxes, and conundrums have been confusing and confounding people since at least the time of the Ancient Greeks. The eponymous riddle, according to legend, was devised by Albert Einstein as a child. He claimed that only about 2% of the population would be able to work out the correct answer. There are no tricks and there is only one answer. It requires the cool application of logic to solve. And a lot of patience. Einstein's Riddle features fifty of the toughest logic problems, lateral thinking puzzles, and tests of mental agility. By turns entertaining and infuriating, the puzzles challenge our preconceptions, tell us about how we reason, and provide a rigorous intellectual workout.
6,50 €
Finlandia Kirja
Lowest tracked price: 6,50 €
Is now a good time to buy?
Good priceThe current price is lower than usual based on observed price history.
Now
6,50 €
Typical 90 days
6,50 €
90-day low
6,50 €
The current price is effectively at the typical observed level.
Based on 39 product-price observations by ParhainHinta. This is price analysis, not a merchant-advertised discount.
Einstein's Riddle price trend
Price history · 39 tracked daysThe observed product price has stayed flat during the tracked period.
Price history shows the lowest observed product price for each day. Delivery costs are not included.
Lowest observed product price
6,50 €
Average product price
6,50 €
Highest observed product price
6,50 €
Compare prices
| Store | Product price | Availability | Updated | ||
|---|---|---|---|---|---|
| 1 | Finlandia Kirja | 6,50 €All-time observed low: 6,50 € | Unknown | 29/10/2026, 02.21 | Go to store |
| 2 | Adlibris | 14,10 €30-day observed low: 14,10 €All-time observed low: 14,10 € | In stock | 29/10/2026, 02.25 | Go to store |
The 30-day and all-time lows are ParhainHinta.fi observations for that merchant. They are not, by themselves, the merchant's statutory reference price for discount advertising.
Specifications
- EAN / GTIN
- 9781408801499
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