diff --git a/2021/day18/main.go.stringparse b/2021/day18/main.go.stringparse
deleted file mode 100644
index bb2b153..0000000
--- a/2021/day18/main.go.stringparse
+++ /dev/null
@@ -1,58 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	h "git.bullercodeworks.com/brian/adventofcode/helpers"
-)
-
-func main() {
-	inp := h.StdinToStringSlice()
-	build := inp[0]
-	for _, v := range inp[1:] {
-		build = fmt.Sprintf("[%s,%s]", build, v)
-	}
-
-	// Keep on steppin' until no change happens
-	var wrk string
-	var done bool
-	for !done {
-		wrk = step(build)
-		done = wrk == build
-		build = wrk
-	}
-	fmt.Println(wrk)
-}
-
-var steps int
-
-func step(inp string) string {
-	steps++
-	// Find the first number that needs to explode.
-	wrk := explode(inp)
-	if wrk != inp {
-		return wrk
-	}
-	// Nothing exploded, look for a split.
-	return split(inp)
-}
-
-func explode(inp string) string {
-	var depth int
-	for i := range inp {
-		if inp[i] == '[' {
-			if depth == 4 {
-				// Explode the leftmost pair from here
-
-			}
-			depth++
-		} else if inp[i] == ']' {
-			depth--
-		}
-	}
-}
-
-func split(inp string) string {
-
-	return inp
-}