Following the slew of brainteasers that have been sweeping the web, internet users are now being baffled by a new mind-boggling riddle.
The puzzle involves working out the values of three symbols - a horse, a horseshoe and a cowboy boot.
It sounds simple enough, but the infuriatingly hard-to-grasp solution hasfoxed plenty of those trying to complete it.
It's already garnered over 500,000 comments and 13,500 shares since it was posted on Facebook.
The puzzle consists of four questions, the first three have which have already been answered.
The final question requires you to add the cowboy boot and the horse and multiply by the horseshoe to come up with the corresponding numerical value.
Answers left in the comments section have varied wildly， ranging from 12 to 48. But, despite initial appearances, the true answer is 21.
The first question, involving three horses adding up to 30, tells us that the value of a horse is 10.
The second equation, featuring two horseshoes and a horse, allows us to deduce the value of the horseshoe is 4.
The third equation tells us that the value of a cowboy boot is 2.
Now, the final question is asking the solution to 1 + 10 x 2.
Some maths-savvy people were able to figure out the solution to the puzzle right away.
One commenter was still confused after the answer was explained to him.
Alex was adamant that the correct solution "doesn't exist".