. . . pythagoras . . .

a² + b² = c²

Remember that formula ?

Three new patterns have been published based on that idea:

pythagoras’ pullover

pythago B 3-

a cozy, slightly oversized pullover with a turtle neck and (nearly) invisible sleeve inset.


It is worked top down seamlessly in one piece. The stitch pattern is easy, it consists of purl and knit stitches only that form a mix of triangles (pythagoras !). Special increases are placed in clever spots following the stitch pattern to make them invisible.

pythago B 1

Intended to be worn with positive ease (10 to 25 cm / 4 to 10”). Take the measurement at your high bust just under the armpits.
The sample is size M worn with 15 cm / 6” of positive ease.

There are only four sizes available due to the kind of the increases and their placement. But it is easy to alter the stitch gauge and thus obtain the best size. (instructions are provided)
S, M, L, XL: finished measurements: 35” / 40½” / 46” / 52“ (89 / 103 / 118 / 132 cm)

These photos are of the unblocked pullover

What you’ll need
DK weight
Total yardage: ± 1150, 1290, 1470, 1670 m (1250, 1400, 1600, 1820 yards)

4 mm (US 6) circular needle or size to obtain gauge
3.5 mm (US 4) circular needle
5 markers

22 sts and 34 rows in stitch pattern (see page 3) with the larger needle and after blocking = 10 x 10 cm (4”x 4”)


Find out more here


Then there is his hat …


This is the first hat I made … But what if I used 2 colors ?

pythago hat grey-red grimbergen 4

Or the whole hat in 2 colors ? Maybe in a lighter yarn weight too ??

pythago hat finger grimbergen 3

3 hats

Three hats made from the same pattern …

pythago 3 hats

Pythagoras’ hat is worked bottom up. Instructions are given for a beanie (length = 20 cm / 7¾”) or a bit of slouch (length = 24 cm / 9½”) and for 2 different yarn weights. Two options are included: a close fitting brim (2 color sample) or a loose fitting brim (red sample).

Due to the stitch pattern and the placement of the decreases there are only two sizes: one with 96 stitches for a heavy yarn weight and one with 128 stitches for a light yarn weight. If you use larger or smaller needles and a heavier or lighter yarn weight, the gauge will be different and most head sizes can be covered.

The stitch pattern is very easy and uses only purl and knit stitches – a perfectly good excuse to start playing. Work one repeat in stranded color knitting (see 2-colored hat), or knit the whole hat in 2 colors (or more). Instructions to personalize your hat are included.

Finished measurement circumference is ± 50 cm / 19½” to fit head 54 to 57 cm / 20½” to 22½”
worsted weight
19 sts in stockinette stitch = 10 cm / 4” with the larger needle
or fingering weight
26 sts in stockinette stitch = 10 cm / 4” with the larger needle

Using another yarn weight results in a different gauge and size (instructions and maths included)

What you’ll need
worsted weight
± 100 to 130 m / 110 to 145 yards
3.5 mm (US 4) circular needle
4 mm (US 6) circular needle

or fingering weight
± 180 to 220 m / 200 to 240 yards
2.5 mm (US 1½) circular needle
3 mm (US 2½) circular needle

tapestry needle

Find out more here


 And then there is his beret …
This one really is my favorite …
pythagoras beret grimbergen 1

Pythagoras’ beret is worked bottom up starting with a Latvian braided two-color cast on aka Kihnu braided cast on.

cast on edge detail

Written instructions are included and a photo tutorial can be found in the separate pdf. It’s a lovely way to start colorwork, but you can use any cast on method you might prefer.

Due to the stitch pattern and the placement of the decreases there are only two sizes: one with 144 stitches and 6 repeats of the crown chart and one with 168 stitches and 7 repeats of the crown chart. Instructions are given for both sizes.

pythago beret large and small

at the left is the small beret and at the right the large beret

pythagoras beret grimbergen 2

Finished measurement circumference at the brim is ± 56 cm / 19½” to fit head 55 to 58 cm / 20½” to 22¾”
Diameter small beret = ± 24 cm / 9½”
Diameter large beret = ± 27 cm / 10½”

pythago beret 2 op boomstam
What you’ll need
sport weight or light DK weight
± 160 to 200 m / 175 to 220 yards (half of each color)
3 mm (US 2½) circular needle
3.5 mm (US 4) circular needle
tapestry needle

21 sts and 33 rows in stranded pattern with the larger needle and blocked = 10 x 10 cm / 4” x 4”

Check it out here

I have the feeling there will be more of these . . .