• 1. Exactly one of the kids has the same initial in their name and in the color of their bike.
• 2. The kid on the silver bike delivered exactly as many newspapers as 100 times his/her age. Nobody else did.
• 3. Brian delivered 100 less newspapers than the kid with the purple bike.
• 4. The kid on the black bike is 10 or 13 years old.
• 5. Sandra is either 12 or has the silver bike.
• 6. The kid who delivered 1100 newspapers is one year younger than Sandra.
• 7. The owner of the purple bike delivered 1200 newspapers or is 12 years old. However, this kid is not 11.
• 8. One of the girls owns the green bike, the other girl delivered 1000 newspapers.
• 9. The 13-year-old kid didn't deliver 1000 newspapers.
• 10. If George is 11, then Brian is 10.
• 1. Exactly one of the kids has the same initial in their name and in the color of their bike.
• 2. The kid on the silver bike delivered exactly as many newspapers as 100 times his/her age. Nobody else did.
• 3. Brian delivered 100 less newspapers than the kid with the purple bike.
• 4. The kid on the black bike is 10 or 13 years old.
• 5. Sandra is either 12 or has the silver bike.
• 6. The kid who delivered 1100 newspapers is one year younger than Sandra.
• 7. The owner of the purple bike delivered 1200 newspapers or is 12 years old. However, this kid is not 11.
• 8. One of the girls owns the green bike, the other girl delivered 1000 newspapers.
• 9. The 13-year-old kid didn't deliver 1000 newspapers.
• 10. If George is 11, then Brian is 10.

Observation: This table is automatically filled accordingly to the grid.

### How to play

• Start by reading all the clues;
• Find the most basic clues and use the grid to mark them on it;
• Use logic deduction to find propositions that are not explicit;
• Click on a clue to mark it as used;
• The answer table is filled automatically.

#### More Logic Grid Puzzles

See our logic grid puzzles list.

If you want even more logic grid puzzles, check out Aha! Puzzles. You will find more than 100 Logic Puzzles.

### Need help?

If, after reading the instructions, you still don't understand how to play, try playing one of these simpler logic grids puzzles. They are "very very easy".

#### Step by step guide

Visit Aha! Puzzles to see their tutorial on how to solve a Logic Puzzle.

### Printable version

Now you can buy the official complete set of answers key for the Logic Grid Puzzles at AhaPrintables.com. Exclusive for teachers and educators.

### History of Logic Grid Puzzles

Logic grid puzzles, often called logic puzzles or logic problems, have roots that can be traced back to the field of mathematical logic and philosophy. They gained mainstream popularity in the mid-20th century, particularly through the work of Raymond Smullyan, an American mathematician and logician, who contributed a range of puzzles and problems designed to challenge logical reasoning skills. Some of the earliest forms of these puzzles can be found in literature and games designed to test the deductive reasoning abilities of individuals. Over time, these puzzles have evolved, incorporating more variables and complexity.

The commercialization of logic grid puzzles saw a significant uptick with the advent of puzzle books and magazines dedicated solely to these types of problems. Moreover, the rise of the internet and digital platforms has made it easier for enthusiasts to access and solve logic grid puzzles, contributing to their global popularity. Today, they are used not just for entertainment but also as educational tools, for cognitive development, and even in some recruitment processes to evaluate problem-solving abilities.

### Benefits of Logic Grid Puzzles for Brain Development

Logic grid puzzles serve as a mental workout, offering various cognitive benefits. They primarily improve deductive reasoning skills, which is the ability to draw specific conclusions from general information. By regularly engaging with these puzzles, individuals can also enhance their attention to detail, analytical thinking, and problem-solving skills. These cognitive improvements are beneficial for both children and adults, aiding in better performance in academic settings and in the workplace.

Additionally, logic grid puzzles can have a positive impact on memory retention and information recall. Working through the clues and making connections between different variables often involves holding multiple pieces of information in the mind simultaneously, which exercises working memory. This form of mental engagement can lead to improvements in other memory-dependent tasks and activities. Overall, the act of solving logic grid puzzles can be seen as a comprehensive brain exercise that enhances various cognitive functions.

### Logic Grid Puzzles in Education

In educational settings, logic grid puzzles serve as a versatile tool for developing a range of skills in students. They are often integrated into the curriculum as supplementary material or used in extracurricular activities to promote logical thinking, critical analysis, and deductive reasoning. These puzzles encourage students to approach problems systematically, breaking them down into smaller, more manageable tasks, and then synthesizing the data to arrive at a conclusion. This methodical approach to problem-solving is not only applicable in mathematics but also in subjects like science, social studies, and language arts, making logic grid puzzles interdisciplinary in nature.

Moreover, these puzzles have the potential to make learning more engaging. Teachers often use them as a break from routine classroom activities or as part of team-building exercises. The interactive and challenging aspects of logic grid puzzles can capture students' interest and motivate them to think deeply. This engagement not only enhances the specific skills required to solve the puzzles but also contributes to a more positive and active learning environment. As educational strategies increasingly emphasize critical thinking and problem-solving abilities, the role of logic grid puzzles in education is likely to continue growing.