Chequer stitch
Alternating blocks of contrasting stitch texture to achieve a chequerboard effect. The blocks are alternately made up of tent stitch or longer diagonal stitches.
Method
Begin with a tent stitch in the top left hand corner.
Then make a stitch across two canvas intersections.
Then across three, then four.
Then three, then two and finally another tent stitch.
Directly next to this make a square of sixteen tent stitches (i.e. four by four).
Continue with these two blocks across a horizontal row. On the row below, place the tent stitch block under the cushion block and the cushion block under the tent block. Make sure all the stitches angle from the bottom left to the top right.

Common uses
Embroidery Techniques
Related Stitches
Identifying Chequer stitch
This chequerboard stitch is made up of two alternating stitch blocks of tent and cushion stitch. The cushion stitch is made of seven diagonal stitches, covering a square of four by four canvas threads.
References
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Mary Thomas’s Dictionary of Embroidery Stitches (1934) , p.45
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Jennifer Campbell, Ann-Marie Bakewell, Guide to Embroidery Stitches (2004)
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Sarah Whittle, The Needlecraft Stitch Directory (2012)