diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3ffccf2
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+all: wordle_opt.wasm
+
+wordle_opt.wasm: wordle_opt/target/wasm32-unknown-unknown/release/wordle_opt.wasm
+	#wasm-snip $< -o $@ 
+	cp $< $@
+
+wordle_opt/target/wasm32-unknown-unknown/release/wordle_opt.wasm: wordle_opt/src/*.rs
+	cd wordle_opt; cargo build --target wasm32-unknown-unknown --release
+
diff --git a/wordle_opt/.gitignore b/wordle_opt/.gitignore
new file mode 100644
index 0000000..2f7896d
--- /dev/null
+++ b/wordle_opt/.gitignore
@@ -0,0 +1 @@
+target/
diff --git a/wordle_opt/Cargo.lock b/wordle_opt/Cargo.lock
new file mode 100644
index 0000000..ba18caf
--- /dev/null
+++ b/wordle_opt/Cargo.lock
@@ -0,0 +1,62 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
+[[package]]
+name = "libc"
+version = "0.2.144"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b00cc1c228a6782d0f076e7b232802e0c5689d41bb5df366f2a6b6621cfdfe1"
+
+[[package]]
+name = "memory_units"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8452105ba047068f40ff7093dd1d9da90898e63dd61736462e9cdda6a90ad3c3"
+
+[[package]]
+name = "wee_alloc"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb3b5a6b2bb17cb6ad44a2e68a43e8d2722c997da10e928665c72ec6c0a0b8e"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "memory_units",
+ "winapi",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "wordle_opt"
+version = "0.1.0"
+dependencies = [
+ "wee_alloc",
+]
diff --git a/wordle_opt/Cargo.toml b/wordle_opt/Cargo.toml
new file mode 100644
index 0000000..b287053
--- /dev/null
+++ b/wordle_opt/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "wordle_opt"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"]
+bench = false
+
+[profile.release]
+debug = true
+lto = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+wee_alloc = "*"
diff --git a/wordle_opt/src/lib.rs b/wordle_opt/src/lib.rs
new file mode 100644
index 0000000..907913d
--- /dev/null
+++ b/wordle_opt/src/lib.rs
@@ -0,0 +1,82 @@
+extern crate wee_alloc;
+
+#[global_allocator]
+static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
+
+
+// webassembly version of all the wordle logic
+// because the javascript version is slow as hell on firefox
+use std::os::raw::c_char;
+
+static mut LOOKUP: Option<Vec<u8>> = None;
+static mut STRINGS: Option<Vec<u8>> = None;
+static mut STR_IDXS: Option<Vec<*const c_char>> = None;
+
+#[no_mangle]
+pub extern fn init_strings(sz: usize) -> *mut c_char {
+    unsafe {
+        STRINGS = Some(vec![0u8; sz]);
+        STRINGS.as_deref_mut().map(|v| v.as_mut_ptr() as *mut c_char).unwrap()
+    }
+}
+
+#[no_mangle]
+pub extern fn init_idx() -> usize {
+    // TODO
+    0
+}
+
+#[no_mangle]
+pub extern fn init_lookup() -> *mut c_char {
+    unsafe {
+        let num_strings = STR_IDXS.as_ref().map(|idxs| idxs.len()).unwrap_or(0);
+
+        LOOKUP = Some(vec![0u8; num_strings*num_strings]);
+        LOOKUP.as_deref_mut().map(|v| v.as_mut_ptr() as *mut c_char).unwrap()
+    }
+}
+
+#[no_mangle]
+pub extern fn calc_match(guess: *const c_char, reference: *const c_char) -> u8 {
+    let mut unmatched = vec![0u8; 26];
+    let mut ret = 0;
+    let mut matched = 0;
+
+    let mut mul = 1;
+    for i in 0..5 {
+        unsafe {
+            if *(guess.offset(i)) == *(reference.offset(i)) {
+                ret += 1*mul;
+                matched |= 1 << i;
+            } else {
+                unmatched[*(reference.offset(i)) as usize - 'a' as usize] += 1;
+            }
+        }
+        mul *= 3;
+    }
+
+    mul = 1;
+    for i in 0..5 {
+        if (matched & (1 << i)) == 0 {
+            let idx = unsafe { *(guess.offset(i)) as usize - ('a' as usize) };
+            if unmatched[idx] > 0 {
+                ret += 2*mul;
+                unmatched[idx] -= 1;
+            }
+        }
+        mul *= 3;
+    }
+
+    ret
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}