y2015d24 pretty easy also but had to use itertools instead of my own combinations/permutations impl because of an overflow

Cargo.lock

@@ -11,10 +11,25 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "either"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
+
 [[package]]
 name = "genaoc"
 version = "0.1.0"
 
+[[package]]
+name = "itertools"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "md5"
 version = "0.7.0"
@@ -59,12 +74,12 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 [[package]]
 name = "utils"
 version = "0.1.0"
-source = "git+https://git.plobos.xyz/projects/PuzzleUtils.git#49b0f24c1bdc2c04df237634607df15f19fb3ead"
 
 [[package]]
 name = "y2015"
 version = "0.1.0"
 dependencies = [
+ "itertools",
  "md5",
  "utils",
 ]