Today's PUZZLE CLASSIC OF THE DAY
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Greek Cross
Draw a Greek cross (a cross with 4 arms of equal length), moving from dot to dot so that exactly 5 dots are enclosed inside the cross and 8 dots are outside of it.
A Broken Clock Face
While in a museum, an old clock with Roman numerals got cracks on its face, dividing it into 4 parts with unequal totals in each - 17, 20, 20, and 21. If one crack would split one of the Roman numerals it would allow to reach 4 parts with the sum of 20 in each. Can you replicate that number and how the crack should split it?
A Fuse Board into 4 Panels
A half-ready 4x6 fuse board has 4 square apertures in it. Cut it into 4 identical panels, each with one aperture, so that a panel's length is no bigger than the fuse board's width.
P-Board into 4 Scaled Parts
Cut this P-shaped board into 4 congruent parts (identical in area and shape, though they can be mirrored), which all are scaled versions of the board (similar).
A Cube Through Cube
It is possible to cut a hole in one cube to enable another identically-sized cube to pass through it. What would be a shape of the minimal cross-section of such a hole?
17 Dots: Counting Squares
How many different squares are indicated by 4 dots marking their corners?
9 Dots: How Many Squares?
How many different squares indicated by four spots can be spotted here?
Digits' Product or Sum
What is bigger: the all digits' product or the all digits' sum?
Squares-in-Squares
It is possible to draw this shape without: a) taking your pencil off the paper; and b) going over any segment twice. Staring from any outer corner and not counting it as a turn, how many turns will be there in order to get back to the starting point?
Three Squares in One Line
It is possible to draw this shape without: a) taking your pencil off the paper; and b) going over any segment twice. Staring from the top left corner and not counting it as a turn, how many turns will be there in order to get back to the starting point?
Kite in the Sky
How many squares can you find in this shape? Select a square and click the "Count" button.
9 Weights
Of 9 identical weights, 8 are the same, while one (a counterfeit) is lighter than the others. The counterfeit can be found in two weighings on a plain balance with no markings on it. How many weights are put on both pans during the 1st weighing, and how many are put during the 2nd weighing?