## SUDOKU

Here are a Samurai Sudoku and two regular Sudoku puzzles. The Samurai Sudoku is made up of five Sudoku puzzles: one in the center and the other four overlapping the corner grids of the

Read More »## Bilkent IEEE Weekly Puzzle

#5 – Two Balls Two balls, each either black or red, are placed in a bag. You draw a ball from the bag, which contains at least one red ball. If the ball you

Read More »## SUDOKU

Here are five Sudoku puzzles. Fill in the numbers so that each row, column and 3×3 grid contains all of the digits 1 to 9. Submit the contents of the diagonal going from the

Read More »## Bilkent IEEE Weekly Puzzle

#4 – Figures How many numbers greater than 1,000 are there consisting of four different figures that go in ascending order from left to right? The Prize for This Question: Rubik’s Mini 2 x

Read More »## SUDOKU

Here are five Sudoku puzzles. Fill in the numbers so that each row, column and 3×3 grid contains all of the digits 1 to 9. Submit the contents of the diagonal going from the

Read More »## Bilkent IEEE Weekly Puzzle

Each letter in the following table corresponds to a different number within the range 1-9. • Consecutive numbers are not to be placed in adjacent cells. • The multiplication of AB and HJ is

Read More »## JIGSAW SUDOKU

Here are five Jigsaw Sudoku puzzles. Fill in the numbers so that each row, column and jigsaw box contains all of the digits 1 to 9. Submit the contents of the diagonal going from

Read More »## Bilkent IEEE Weekly Puzzles

#2 – One Thousand Cubes A 10x10x10 cube is assembled by putting together 1,000 unit cubes. Following this, each side of the assembled cube is painted blue. How many of the unit cubes will

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