diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..8ef34a1
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,13 @@
+FROM golang:1.20-alpine
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+
+RUN go mod download
+
+COPY . .
+
+RUN cd ./cli && CGO_ENABLED=0 GOOS=linux go build -o 15
+
+ENTRYPOINT ["./cli/15"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..af42714
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+# 15 puzzle
+Simple 15 puzzle implementation with naive solver.
+
+## Docker
+
+```
+docker run --rm -it $(docker build -q .) game
+```
+or 
+```
+docker run --rm -it $(docker build -q .) solve
+```
+
+## From source
+
+```
+cd cli && go run . solve
+```
+or
+```
+cd cli && go run . game
+```
diff --git a/go.mod b/go.mod
index 3d4c2da..ea0a026 100644
--- a/go.mod
+++ b/go.mod
@@ -4,13 +4,12 @@ go 1.20
 
 require (
 	atomicgo.dev/keyboard v0.2.9
-	golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1
+	golang.org/x/exp v0.0.0-20230725093048-515e97ebf090
 )
 
 require github.com/vcaesar/keycode v0.10.0 // indirect
 
 require (
 	github.com/containerd/console v1.0.3 // indirect
-	github.com/fotonmoton/algorithms v0.0.0-20220110180800-fcd2f9b99aad // indirect
 	golang.org/x/sys v0.10.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 5a29769..614e0c9 100644
--- a/go.sum
+++ b/go.sum
@@ -12,8 +12,6 @@ github.com/containerd/console v1.0.3 h1:lIr7SlA5PxZyMV30bDW0MGbiOPXwc63yRuCP0ARu
 github.com/containerd/console v1.0.3/go.mod h1:7LqA/THxQ86k76b8c/EMSiaJ3h1eZkMkXar0TQ1gf3U=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fotonmoton/algorithms v0.0.0-20220110180800-fcd2f9b99aad h1:oe2EOICvLMkebV8ukPBCuKruNTA9HcoQ5OwyyTDxXDs=
-github.com/fotonmoton/algorithms v0.0.0-20220110180800-fcd2f9b99aad/go.mod h1:SNVorQGYffwEPh6lug8Rgh3AkpxzxWfirrPCIt7KVdg=
 github.com/gookit/color v1.4.2/go.mod h1:fqRyamkC1W8uxl+lxCQxOT09l/vYfZ+QeiX3rKQHCoQ=
 github.com/gookit/color v1.5.0/go.mod h1:43aQb+Zerm/BWh2GnrgOQm7ffz7tvQXEKV6BFMl7wAo=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
@@ -37,10 +35,11 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/vcaesar/keycode v0.10.0 h1:Qx5QE8ZXHyRyjoA2QOxBp25OKMKB+zxMVqm0FWGV0d4=
 github.com/vcaesar/keycode v0.10.0/go.mod h1:JNlY7xbKsh+LAGfY2j4M3znVrGEm5W1R8s/Uv6BJcfQ=
 github.com/xo/terminfo v0.0.0-20210125001918-ca9a967f8778/go.mod h1:2MuV+tbUrU1zIOPMxZ5EncGwgmMJsa+9ucAQZXxsObs=
-golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1 h1:MGwJjxBy0HJshjDNfLsYO8xppfqWlA5ZT9OhtUUhTNw=
-golang.org/x/exp v0.0.0-20230713183714-613f0c0eb8a1/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
+golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 h1:Di6/M8l0O2lCLc6VVRWhgCiApHV8MnQurBnFSHsQtNY=
+golang.org/x/exp v0.0.0-20230725093048-515e97ebf090/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=