The Slip, Knit, Pass is left-leaning decrease that is almost identical to the SSK. Reduces the stitch count by 1.
Slip 1, knit 1, psso:
- With yarn in back, slip 1. Always slip the stitch purlwise.
- Knit the next stitch.
- Insert the tip of the left-hand needle into the stitch you just slipped to the right-hand needle and pass it over the stitch you just knitted.