diff --git a/advent_of_code/2022/12/Cargo.lock b/advent_of_code/2022/12/Cargo.lock
new file mode 100644
index 0000000..3fd4edd
--- /dev/null
+++ b/advent_of_code/2022/12/Cargo.lock
@@ -0,0 +1,71 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "fixedbitset"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
+
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
+[[package]]
+name = "indexmap"
+version = "1.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
+dependencies = [
+ "autocfg",
+ "hashbrown",
+]
+
+[[package]]
+name = "main"
+version = "0.1.0"
+dependencies = [
+ "nom",
+ "petgraph",
+]
+
+[[package]]
+name = "memchr"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+
+[[package]]
+name = "minimal-lexical"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
+
+[[package]]
+name = "nom"
+version = "7.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8903e5a29a317527874d0402f867152a3d21c908bb0b933e416c65e301d4c36"
+dependencies = [
+ "memchr",
+ "minimal-lexical",
+]
+
+[[package]]
+name = "petgraph"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6d5014253a1331579ce62aa67443b4a658c5e7dd03d4bc6d302b94474888143"
+dependencies = [
+ "fixedbitset",
+ "indexmap",
+]
diff --git a/advent_of_code/2022/12/Cargo.toml b/advent_of_code/2022/12/Cargo.toml
new file mode 100644
index 0000000..d62e7ae
--- /dev/null
+++ b/advent_of_code/2022/12/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "main"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+nom = "7.1.1"
+petgraph = "0.6.2"
diff --git a/advent_of_code/2022/12/input.txt b/advent_of_code/2022/12/input.txt
new file mode 100644
index 0000000..5044030
--- /dev/null
+++ b/advent_of_code/2022/12/input.txt
@@ -0,0 +1,41 @@
+abcccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaccaaaaaaaaccccccccccccccccccccccccccccccccccccaaaaaa
+abcccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaccaaaaaaccccccccccccccccccccccccccccccccccccccaaaaa
+abcccccccccccccccccccccccccccccccccaaaaaaaacccaaaaccaaaaaaccccccccccccccccccccaaaccccccccccccccccaaaa
+abcccccccccccccccccccccccccccccccccccaaaaaaaccaaccccaaaaaaccccccccccccccccccccaaaccccccccccccccccaaaa
+abcccccccccccccccccccccccccccccaaacccaaaaaaaacccccccaaccaaccccccccccccccccccccaaaccccccccccccccccaaac
+abcccccccccccccccccccccccccccccaaaaaaaaacaaaacccccccccccccccaccaaccccccccccccciiaaccaaaccccccccccaacc
+abccccccccaaccccccccccccccccccaaaaaaaaaaccaaacccccccccccccccaaaaaccccccccacaiiiiijjaaaacccccccccccccc
+abacccaaccaacccccccccccccccccaaaaaaaaaaccccacccccaaaaccccccccaaaaacccccccaaiiiiijjjjaaaccccccaacccccc
+abacccaaaaaacccccccccccccccccaaaaaaaaccccccccccccaaaacccccccaaaaaacccccccaiiiioojjjjjacccaaaaaacccccc
+abcccccaaaaaaacccccccccccccccccaaaaaaccccaaccccccaaaacccccccaaaaccccccccciiinnoooojjjjcccaaaaaaaccccc
+abccccccaaaaaccccccccccccccccccaaaaaacccaaaaccccccaaacccccccccaaaccccccchiinnnooooojjjjcccaaaaaaacccc
+abcccccaaaaacccccccccccccccccccaacccccccaaaaccccccccccccccccccccccccccchhiinnnuuoooojjjjkcaaaaaaacccc
+abccccaaacaaccccccccccccccccccccccccccccaaaaccccccccccccccccccaaacccchhhhhnnntuuuoooojjkkkkaaaacccccc
+abccccccccaacccccccccccccccccccccccccccccccccccccccccccccccccccaacchhhhhhnnnnttuuuuoookkkkkkkaacccccc
+abcccccccccccccccccccaacaaccccccccccccccccccccccccccccccccccaacaahhhhhhnnnnntttxuuuoopppppkkkkacccccc
+abcccccccccccccccccccaaaaacccccccccaccccccccccccccccccccccccaaaaahhhhmnnnnntttxxxuuupppppppkkkccccccc
+abccccccccccccccccccccaaaaacccccaaaacccccccccccccccccccccccccaaaghhhmmmmttttttxxxxuuuuuupppkkkccccccc
+abcccccccccccccccccccaaaaaaaccccaaaaaaccccccccccccccccccccccccaagggmmmmtttttttxxxxuuuuuuvppkkkccccccc
+abcccccccccccccccccccaaaaaaaaaaacaaaaacccccccccccccccccccccccaaagggmmmttttxxxxxxxyyyyyvvvppkkkccccccc
+abccccccccccccccccccccaaaaaaaaaaaaaaaccccccccccccccccccccaacaaaagggmmmtttxxxxxxxyyyyyyvvppplllccccccc
+SbcccccccccccccccccccaaaaaaaaaacaccaaccccccccccccccccccccaaaaaccgggmmmsssxxxxEzzzyyyyvvvpplllcccccccc
+abcccccccccccccccccccccaaaaaaccccccccccccccaacaaccccccccaaaaaccccgggmmmsssxxxxyyyyyvvvvqqplllcccccccc
+abccccccccccccccccccccccaaaaaacccccccccccccaaaacccccccccaaaaaacccgggmmmmsssswwyyyyyvvvqqqlllccccccccc
+abcccccccccccccccccccccaaaaaaaccccccccccccaaaaacccccccccccaaaaccccgggmmmmsswwyyyyyyyvvqqllllccccccccc
+abcccccccccccccccccccccaaaccaaacccccccccccaaaaaaccccccccccaccccccccgggooosswwwywwyyyvvqqlllcccccccccc
+abccccccccccccccccccccccacccccccccccccccccacaaaacccccccccccccccccccfffooosswwwwwwwwvvvqqqllcccccccccc
+abccccccccccccccccccccccccccccccccccccccccccaacccccccccccccccccccccfffooosswwwwwrwwvvvqqqllcccccccccc
+abccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccffooossswwwrrrwvvvqqqmmcccccccccc
+abccccaaacccccccccccccccccccccccccccccccccccccccccccccccccccccccccccffooosssrrrrrrrrqqqqmmmcccccccccc
+abccccaaacaacccccaaccccaaaacccccccccccccccccccccccccccccccccccccccccffooossrrrrrnrrrqqqqmmmcccaaacccc
+abcccccaaaaaccaaaaacccaaaaacccccccccccccccccccccccccccccccccccccccccfffoooorrnnnnnnmqqmmmmmcccaaacccc
+abccaaaaaaaacccaaaaaccaaaaaaccccccccccccccccccccccccccccccccccccccccfffooonnnnnnnnnmmmmmmmcccaaaccccc
+abcccaaaaacccccaaaaaccaaaaaaccccccaacccccccccccccccccccccccccccccccccfffoonnnnneddnmmmmmmccccaaaccccc
+abccccaaaaacccaaaaacccaaaaaacccccaaaaaaccccccccccccccccccccaaccccccccffeeeeeeeeeddddddddccccaaaaccccc
+abccccaacaaacccccaacccccaacccccccaaaaaaaccccccccccccccccaaaaaccccccccceeeeeeeeeedddddddddccaccaaccccc
+abccccaacccccccccccccccccccccccccaaaaaaaccaaaccccccccccccaaaaaccccccccceeeeeeeeaaaaddddddcccccccccccc
+abcccccccccccaaccccccccccccccccccccccaaaaaaaaacccccccccccaaaaacccccccccccccaaaacaaaacccccccccccccccaa
+abccccccccaacaaacccccccccccccccccccccaaaaaaaacccccccccccaaaaaccccccccccccccaaaccaaaaccccccccccccccaaa
+abccccccccaaaaacccccccccccccccccccccacaaaaaaccccccccccccccaaacccccccccccccccaccccaaacccccccccccacaaaa
+abcccccccccaaaaaaccccccccccccccccaaaaaaaaaaacccccccccccccccccccccccccccccccccccccccacccccccccccaaaaaa
+abcccccccaaaaaaaaccccccccccccccccaaaaaaaaaaaaacccccccccccccccccccccccccccccccccccccccccccccccccaaaaaa
\ No newline at end of file
diff --git a/advent_of_code/2022/12/src/main.rs b/advent_of_code/2022/12/src/main.rs
new file mode 100644
index 0000000..7e59c58
--- /dev/null
+++ b/advent_of_code/2022/12/src/main.rs
@@ -0,0 +1,31 @@
+use std::collections::HashMap;
+
+fn main() {
+    let test_input = include_str!("../test.txt")
+        .split_whitespace()
+        .collect::<Vec<&str>>();
+
+    let mut start = (0, 0);
+    let mut end = (0, 0);
+    let mut points : HashMap<(u32, u32), u32> = HashMap::new();
+
+    let mut y = 0;
+    for line in test_input {
+        let mut x = 0;
+        for ch in line.chars() {
+            let mut c = ch;
+            if c == 'S' {
+                c = 'a';
+                start = (x, y);
+            }
+            if c == 'E' {
+                c = 'z';
+                end = (x, y);
+            }
+
+            points.insert((x, y), c as u32 - 'a' as u32);
+            x += 1;
+        }
+        y += 1;
+    }
+}
diff --git a/advent_of_code/2022/12/test.txt b/advent_of_code/2022/12/test.txt
new file mode 100644
index 0000000..433e0d2
--- /dev/null
+++ b/advent_of_code/2022/12/test.txt
@@ -0,0 +1,5 @@
+Sabqponm
+abcryxxl
+accszExk
+acctuvwj
+abdefghi
\ No newline at end of file