After solving the first side of the pyraminx, I sometimes get a case where everything is solved except for two pieces that are in the correct spot but are flipped from their proper position.
After trial and error, I found a simple solution that involves swapping the two incorrect pieces and then solving normally using the basic algorithms that I've learned.
After solving the first side of the pyraminx, I sometimes get a case where everything is solved except for two pieces that are in the correct spot but are flipped from their proper position.