Here is this week’s thinking challenge. Last night there was a significant weather change and we had our 1st major snowfall. This is great news for the avid skiers being that I live only 1 hr from the beautiful Rocky Mountains. Time to wax the skis! Enjoy the puzzle.
Lake Louise, Image Courtesy of Trent Saina
By changing one letter at a time to form new words, and leaving all other letters in their original positions, convert the word RAIN into the word SNOW in seven (or fewer) steps.
R A I N
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S N O W
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges! 
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
Here is this week’s thinking challenge. Remember when you were little and you had to solve the “Spot the Differences” puzzles? I stumbled across one in my hunt for a new puzzle this week and decided adding one might be fun. After thinking about it a little more, I realized these kinds of puzzles are a great example of using the Focus/Defocus heuristic. If you are not familiar with using heuristics in your testing, read more here. Enjoy the puzzle!
How many differences can you spot between the two pictures? Be sure to look carefully.
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges!
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
Here is this week’s thinking challenge. Enjoy!
Of three men, one always tells the truth, one always tells lies, and one answers “yes” or “no” randomly. Each man knows which one each of the others are. You may ask three yes/no questions, each of which may only be answered by one of the three men, after which you must be able to identify which man is which. How can you do it?
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges!
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
Here is this week’s thinking challenge. This puzzle is from the book BrainMatics Logic Puzzles by Ivan Moscovich. Enjoy!
Ten hotel doors are numbered from 1 to 10; all are closed. The cleaning lady walks by and opens every door. Then a second cleaning lady walks by and closes all the even-numbered doors. Then the repairman walks by and changes the state of every door whose number is a multiple of three. Then another person changes the state of every door whose number is a multiple of four, and so on, until ten people have walked by.
Which doors will be open after the tenth person has walked by? Can you also guess as to which doors would be open at the end if there were 100 doors involved in the same procedure?
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges!
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
Summer has flown by and I have completely neglected posting puzzles for almost 2 months. Yikes!
As I burn through my backlog, tending to my blog and providing puzzles has bubbled back to the top (well top section anyways 
). Get ready…I will post a new thinking challenge tomorrow morning.
Here is this week’s thinking challenge. This puzzle is from the book BrainMatics Logic Puzzles by Ivan Moscovich. Enjoy!
In the drawer you have six striped socks, eight polka dot socks, and ten socks with stars. In complete darkness, how many socks must you pick out to ensure you get a pair of any pattern? And how many must you pick out in order to have a pair of each pattern?
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges!
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
Here is this week’s thinking challenge. This puzzle is from the book BrainMatics Logic Puzzles by Ivan Moscovich. Enjoy!
Here is a classic problem of connecting the dots in different configurations with a minimum number of straight lines. No lifting your pencil allowed. The following image shows three different problems. Once you solve the 9-point problem, the problems solving a greater number of points should not be too difficult.
Too easy? Can you further extend your imagination and solve the three problems by one single straight line?
I will not be posting answers to the games and puzzles on my site. Email me if you think you have the answer. I really enjoy hearing from everyone who takes on these challenges!
Do you know of a great game or puzzle that you would be willing to share? Email me your suggestion and if I use it on my blog I will credit you for the submission. Thanks in advance for sending me your suggestions!
Puzzle Difficulty Rating: [ratings]
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