Clarify Regulation 5b5f (#1250)

Co-authored-by: Nanush7 <59543882+Nanush7@users.noreply.github.com>
Co-authored-by: ohexter <116421789+ohexter@users.noreply.github.com>

wca-guidelines.md

@@ -111,6 +111,7 @@ To be more informative, each Guideline is classified using one of the following
 - 5b5f+) [EXAMPLE] There is a [Visual Guide](https://drive.google.com/file/d/15XszaCGNvy3Dk6X6qERzZWZaDH1RH04z/view) available for [Regulation 5b5f](regulations:regulation:5b5f).
 - 5b5f++) [EXAMPLE] A 4x4x4 Cube edge "wing" twisted on its spot is considered solved.
 - 5b5f+++) [EXAMPLE] A corner affected by a corner twist is considered to be placed in a valid position, but such position does not render the piece solved.
+- 5b5f++++) [CLARIFICATION] If there are multiple pieces partially detached or not fully placed, their final position is assessed one at a time. The piece that is closest to an open position is assessed first, and is then considered to occupy that position. This process is repeated until all partially detached or not fully placed pieces have been assessed.
 - 5c+) [REMINDER] If a competitor has a puzzle defect, this does not grant them the right to an extra attempt.