Black Belt Kakuro: 150 Puzzles

Kakuro mania is taking over the world! Puzzle fanatics and beginners are discovering just how addictive these brain benders are.

• Your challenge: to use a combination of logic and basic math. Can you fill in the empty squares using the numbers 1 to 9? Keep in mind that the sum of each horizontal set of digits equals the number in the black triangle to its left, and the sum of each vertical set of digits equals the number in the black triangle above it. And there�s one more obstacle: NO REPEATS!
• Here we�ve indicated the skill level necessary to complete each book in this series in the same way Japanese karate levels are ranked: by different colored belts. To complete the Black Belt volume, you better be a champ because you�ll need all the brain power you have to solve these cranium crushers.