I gave the equation to Claude.ai (See the Screenshot) and read full post to know the story. This appears to be a matchstick puzzle where the goal is to move 1 stick to make the equation "16=4" correct. Currently, it shows "1-6=4" using matchsticks laid out to form these numbers and symbols. Let's think about this step by step: 1. We need to make "16=4" correct 2. Currently we have "1-6=4" 3. 16 divided by 4 equals 4, so making this a division problem would solve it 4. The horizontal subtraction sign (-) is made of one matchstick 5. To create a division sign (÷), we need to add two dots - one above and one below the horizontal line Solution: Move the horizontal subtraction sign matchstick to create one of the dots needed for a division symbol (÷). This would make the equation "16÷4=4" which is mathematically correct. Would you like me to explain further or would you like another puzzle? CopyRetry AS we need answer 4 by moving one stick, there is no 16 or something you answered so you need to re think Edit I apologize for my confusion in the previous response. You're right - let me look at this again more carefully. Looking at the current equation made with matchsticks: 1-6=4 We need to move just ONE stick to make an equation that equals 4. Let me think through this step by step: 1. Currently we have "1-6=4" 2. This equation is incorrect as 1-6 = -5, not 4 3. We can only move ONE stick 4. Looking at the numbers and placement possibilities... Ah! I see the solution now: Move the vertical stick from the 6 to make it a 0, creating the equation: 1-0=4 → NO, that's still not correct... Let me think one more time... The goal is to make an equation that equals 4... I believe the answer would be to move one stick from the 6 to make: 1+3=4 This works because: - Moving one stick from the 6 can transform it into a 3 - The equation 1+3=4 is mathematically correct Is this the solution you were looking for? CopyRetry AS if you move 1 stick from 6 then how you get + from -, as you allowed to move only 1 stick