![Working a sl1-k2tog-psso left-leaning double decrease](https://www.lavisch.com/site/wp-content/uploads/2020/02/200325_Working-a-sl1-k2tog-psso-left-leaning-double-decrease_sq-1024x1024.jpg)
The double decrease as shown in this tutorial reduces 3 stitches down to 1 stitch in a left-leaning way. The sl1-k2tog-psso abbreviation is short for “slip 1 st, knit 2 stitches together, pass the slipped stitch over the knit-together stitches”. You may however also encounter SK2P as an abbreviation for this decrease.
As you may already expect, there are 3 main steps in working this double decrease: sl1, k2tog, and psso. Read on to see how it’s worked.
Materials
Yarn: * Paintbox Yarns Simply DK, a good value, good quality 100% acrylic yarn, here in the color 128 Lime Green.
Needles: * KnitPro Zing Fixed Circular Needles. In this tutorial, I used the 4 mm (US 6) size with a cable length of 80 cm (32 inches).
Working a sl1-k2tog-psso step by step
1. First, work your way across the row until you’ve reached the point where you want to make the decrease. In this case, I want to work the double decrease over the 3 stitches in the middle of the swatch. (I worked further in the same swatch I used for my yarn over tutorial).
![The start of a sl1-k2tog-psso](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_2-1024x1024.jpg)
2. To start, slip the next stitch knitwise from the left knitting needle to the right knitting needle. Unfortunately no picture for this step, I noticed too late that it was totally out of focus…
3. To work the next step, insert the right-hand needle knitwise into the front loop of the next 2 stitches on the left-hand needle.
![step 3](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_3-1024x1024.jpg)
4. Wrap the yarn around the needle…
![wrap yarn around the needle](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_4-1024x1024.jpg)
5. … and pull it through the 2 stitches.
![](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_5-1024x1024.jpg)
6. To finish the k2tog part of this decrease, slide the original 2 stitches off the left-hand needle.
![the k2tog part done!](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_6-1024x1024.jpg)
7. Now for the third and last part of this decrease, insert the left-hand needle into the slipped stitch …
![](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_7-1024x1024.jpg)
8. … and pull it over the k2tog and off the right-hand needle to complete the decrease.
![And the last step of the sl1-k2tog-psso is done!](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_8-1024x1024.jpg)
The below picture shows how it looks after 2 more decrease rows have been worked.
![](https://www.lavisch.com/site/wp-content/uploads/2020/02/Working-a-sl1-k2tog-psso-decrease_9-1024x1024.jpg)
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