This twenty-column, twenty-five-row panel assigns three of every six logical columns to A-color foreground. The eighteen-column interior therefore has nine marked columns and nine unmarked columns. Each marked column extends through twelve logical rows. The purpose is inspecting a sustained vertical chain of overlay stitches while distinguishing the solid foreground columns from the striped background that remains between them.
Verify the long-column budget
Nine marked columns multiplied by twelve logical rows require 108 drops. The first nine use front loops of A single crochets. The remaining ninety-nine use front loops of earlier A double crochets, one per later logical row in each marked column. B rows always use back-loop single crochet. Each anchor remains a distinct loop two rows below; a continuous visual column does not mean several drops enter one shared old loop.
Keep surface and working counts separate
The rectangle has five hundred working positions. A is worked for 260 positions and B for 240. There are 108 long double crochets and 392 ordinary single crochets overall. The final chart shows 368 A-colored cells and 132 B-colored cells because each long stitch covers an additional B position. Those visible totals cannot tell you the yarn used by the taller A stitches or the row-end tails.
Check tension through an entire column
Sample several B/A pairs in the intended yarns. Make the long stitches tall enough to reach their actual front-loop anchors without drawing the fabric upward. A short drop repeated through twelve logical levels can create a pronounced ridge of contraction. Do not solve that by moving an anchor one row nearer or adding extra stitches behind it. Compare the finished trial with the exact coordinates and adjust stitch tension in a new physical sample.
Questions and repair choices
Why are the background columns striped?
They keep ordinary alternating A and B rows. Only marked columns cover the B positions with A drops.
Does a long column use one continuous strand?
Every working row is attached separately and cut at its end. The visible column joins through stitch insertions, not an uncut vertical working-yarn route.
Can I make all columns solid A?
That would be a different mask and material study. Preserve the nine-column source before changing the design.
Exact settings and complete working sequence
Choose vertical-stripes, 20 chart columns and 25 physical working rows in the Mosaic Crochet Pattern Generator. Yarn A is #1B5462 and yarn B is #E7DAC0. Use smooth compatible yarns and a suitable sample hook. The logical interior is 18 columns by 12 rows. The saved operation count is 108 overlay dc and 392 ordinary sc, with all row-end tails separate from those counts.
Download the exact original mosaic project JSON. Restore it before comparing another palette or size. In US terms, ordinary interior stitches are BLO sc and the covering stitch is dc into an unused same-color front loop two rows below. In UK terms these are BLO dc and tr. Every drop replaces the ordinary stitch behind it. Begin with the stated chain foundation, attach each later row at the right, keep the front facing and cut at the left without turning. Secure the final tails after completing the last row; any border is separate. Read the chart-reading guide to distinguish working symbols from the final visible-color panel.
Yarn A #1B5462: ch 21, sc in second chain and across: 20 sc. Cut yarn;keep right side facing. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 1,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 1,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 1,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 3,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 3,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 3,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 5,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 5,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 5,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 7,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 7,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 7,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 9,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 9,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 9,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 11,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 11,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 11,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 13,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 13,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 13,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 15,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 15,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 15,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 17,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 17,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 17,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 19,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 19,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 19,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 21,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 21,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 21,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn B #E7DAC0: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 18 BLO sc in successive stitches;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
Yarn A #1B5462: attach at right edge with standing sc through both loops (counts as first stitch). Work right to left: 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 23,columns 16 down to 14; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 23,columns 10 down to 8; 3 BLO sc in successive stitches; 3 overlay dc,one in each unused front loop on row 23,columns 4 down to 2;finish with sc through both loops in left edge. Skip the ordinary stitch behind every drop. 20 completed stitches. Cut yarn;do not turn. [20 working positions]
