98 riddles
Video riddles
Glass Overlay: Slide and Cancel
Shaded Part: The Pinwheel
Two Candles: Twice as Tall
Shaded Part: Tilted Square
Two Candles: 32 cm and 22 cm
Shaded Part: The Triangle
Glass Overlay: Busy Cards
Glass Overlay: Lines Cancel
Shaded Part: Three Corners
How Many Routes: 3 × 2 Grid
What Am I? Roads Without Cars
Mirror Clock: The Long Wait
Flip, Then Turn
Roman Subtraction
Half a Turn
Longest Roman Numeral
Mirror Clock: 13:31
A Quarter Turn
How Many Routes: One Cone
How Many Routes: 2 × 2 Grid
What Am I? The Grey Trail
Two Candles: 12 cm and 8 cm
