The downloadable pattern has visuals and a crochet diagram to better explain the Spike Stitches shown below.

• Beg = Beginning 
• Ch(s) = Chain(s) 
• Dc = Double crochet 
• Prev = Previous
• Rep = Repeat 
• RS = Right side 
• Sk = Skip 
• Sl st = Slip stitch
• Spike 2 St = Wrap hook and go in between the 2nd and 3rd posts through the project. Wrap the hook and pull the loop through to the proper height. (Yarn over and pull through two loops) twice. 
• Spike 3 st = Wrap hook and go in between the 3rd and 4th posts through the project. Wrap the hook and pull the loop through to the proper height. (Yarn over and pull through two loops) twice. 
• St(s) = Stitch(es) 
• Sp(s) = Space(es)

Ch 6.

1st row: RS. 1 dc in 4th ch from hook and in next 2 ch. Turn. 1 block made.

2nd row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 2 blocks made. 

3rd row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. (sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 3 blocks made.

4th row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row] 2 times. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 4 blocks made.

5th row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row] 3 times. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 5 blocks made.

6th row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row] 4 times. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 6 blocks made.

7th row: Ch 6. 1 dc in 4th ch from hook and in next 2 ch. [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row] 5 times. (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 7 blocks made.

8th row (make new beginning box, don’t do last box): Ch 6, dc in 4th ch from hook and in next 2 ch, [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row]. Slip stitch into the last chain; turn. Do NOT make a block in the last space. Turn. 7 blocks across. 

9th row (don’t make new beginning box, make new last box): Slip st across of the top of the stitches to the top of the ch-3, Ch 3. (spike 3 st, spike 2 st, dc). [(sl st, ch 3, spike 3 st, spike 2 st, dc) in ch-3 sp of prev row] Rep from [ ] across. Last box, (sl st, ch 3, spike 3 st, spike 2 st) in ch-3 sp of prev row, 1 dc in turning chain to anchor stitch. Turn. 7 blocks across.

Rep 8th and 9th rows until you have 91 blocks in the length.  

The download includes crochet diagrams for both regular corner-to-corner and spiked-stitch corner-to-corner for comparison.