diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..166db3a
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,30 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${fileDirname}",
+            "env": {},
+            "args": []
+        },
+        {
+            "name": "MOTHd",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${workspaceFolder}/cmd/mothd",
+            "env": {},
+            "args": [
+                "--state", "/tmp/state",
+                "--puzzles", "${workspaceFolder}/example-puzzles",
+                "--theme", "${workspaceFolder}/theme",
+            ]
+        }
+    ]
+}
\ No newline at end of file
diff --git a/TODO.md b/TODO.md
index a05e17a..665f4ed 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,3 +1,5 @@
 * Figure out how to log JSend short text in addition to HTTP code
 * We've got logic in state.go and httpd.go that is neither httpd nor state specific.
   Pull this into some other file that means "here are the brains of the server".
+* Get Bo's answer pattern anchors working again
+* Are we logging every transaction now?
diff --git a/cmd/mothd/__debug_bin b/cmd/mothd/__debug_bin
new file mode 100755
index 0000000..10b302f
Binary files /dev/null and b/cmd/mothd/__debug_bin differ
diff --git a/cmd/mothd/main.go b/cmd/mothd/main.go
index f457edf..718348b 100644
--- a/cmd/mothd/main.go
+++ b/cmd/mothd/main.go
@@ -27,7 +27,7 @@ func main() {
 	puzzlePath := flag.String(
 		"puzzles",
 		"",
-		"Path to puzzles tree; if specified, enables development mode",
+		"Path to puzzles tree (enables development mode)",
 	)
 	refreshInterval := flag.Duration(
 		"refresh",
diff --git a/cmd/transpile/main.go b/cmd/transpile/main.go
index 119a381..84f3293 100644
--- a/cmd/transpile/main.go
+++ b/cmd/transpile/main.go
@@ -14,84 +14,101 @@ import (
 	"github.com/spf13/afero"
 )
 
-// T contains everything required for a transpilation invocation (across the nation).
+// T represents the state of things
 type T struct {
-	// What action to take
-	w        io.Writer
-	Cat      string
-	Points   int
-	Answer   string
-	Filename string
-	Fs       afero.Fs
+	Stdout   io.Writer
+	Stderr   io.Writer
+	Args     []string
+	BaseFs   afero.Fs
+	fs       afero.Fs
+	filename string
+	answer   string
 }
 
-// ParseArgs parses command-line arguments into T, returning the action to take.
-// BUG(neale): CLI arguments are not related to how the CLI will be used.
-func (t *T) ParseArgs() string {
-	action := flag.String("action", "inventory", "Action to take: must be 'inventory', 'open', 'answer', or 'mothball'")
-	flag.StringVar(&t.Cat, "cat", "", "Puzzle category")
-	flag.IntVar(&t.Points, "points", 0, "Puzzle point value")
-	flag.StringVar(&t.Answer, "answer", "", "Answer to check for correctness, for 'answer' action")
-	flag.StringVar(&t.Filename, "filename", "", "Filename, for 'open' action")
-	basedir := flag.String("basedir", ".", "Base directory containing all puzzles")
-	flag.Parse()
+// Command is a function invoked by the user
+type Command func() error
 
-	osfs := afero.NewOsFs()
-	t.Fs = afero.NewBasePathFs(osfs, *basedir)
-
-	return *action
+func nothing() error {
+	return nil
 }
 
-// Handle performs the requested action
-func (t *T) Handle(action string) error {
-	switch action {
-	case "inventory":
-		return t.PrintInventory()
-	case "open":
-		return t.Open()
-	case "mothball":
-		return t.Mothball()
-	default:
-		return fmt.Errorf("Unimplemented action: %s", action)
+// ParseArgs parses arguments and runs the appropriate action.
+func (t *T) ParseArgs() (Command, error) {
+	var cmd Command
+
+	if len(t.Args) == 1 {
+		fmt.Fprintln(t.Stderr, "Usage: transpile COMMAND [flags]")
+		fmt.Fprintln(t.Stderr, "")
+		fmt.Fprintln(t.Stderr, " mothball: Compile a mothball")
+		fmt.Fprintln(t.Stderr, " inventory: Show category inventory")
+		fmt.Fprintln(t.Stderr, " open: Open a file for a puzzle")
+		fmt.Fprintln(t.Stderr, " answer: Check correctness of an answer")
+		return nothing, nil
 	}
+
+	flags := flag.NewFlagSet(t.Args[1], flag.ContinueOnError)
+	directory := flags.String("dir", "", "Work directory")
+
+	switch t.Args[1] {
+	case "mothball":
+		cmd = t.DumpMothball
+	case "inventory":
+		cmd = t.PrintInventory
+	case "open":
+		flags.StringVar(&t.filename, "file", "puzzle.json", "Filename to open")
+		cmd = t.DumpFile
+	case "answer":
+		flags.StringVar(&t.answer, "answer", "", "Answer to check")
+		cmd = t.CheckAnswer
+	default:
+		return nothing, fmt.Errorf("%s is not a valid command", t.Args[1])
+	}
+
+	flags.SetOutput(t.Stderr)
+	if err := flags.Parse(t.Args[2:]); err != nil {
+		return nothing, err
+	}
+	if *directory != "" {
+		t.fs = afero.NewBasePathFs(t.BaseFs, *directory)
+	} else {
+		t.fs = t.BaseFs
+	}
+	log.Println(t.Args, t.fs)
+
+	return cmd, nil
 }
 
 // PrintInventory prints a puzzle inventory to stdout
 func (t *T) PrintInventory() error {
-	inv := make(map[string][]int)
-
-	dirEnts, err := afero.ReadDir(t.Fs, ".")
+	inv, err := transpile.FsInventory(t.fs)
 	if err != nil {
 		return err
 	}
-	for _, ent := range dirEnts {
-		if ent.IsDir() {
-			c := t.NewCategory(ent.Name())
-			if puzzles, err := c.Inventory(); err != nil {
-				log.Print(err)
-				continue
-			} else {
-				sort.Ints(puzzles)
-				inv[ent.Name()] = puzzles
-			}
-		}
-	}
 
-	m := json.NewEncoder(t.w)
-	if err := m.Encode(inv); err != nil {
-		return err
+	cats := make([]string, 0, len(inv))
+	for cat := range inv {
+		cats = append(cats, cat)
+	}
+	sort.Strings(cats)
+	for _, cat := range cats {
+		puzzles := inv[cat]
+		fmt.Fprint(t.Stdout, cat)
+		for _, p := range puzzles {
+			fmt.Fprint(t.Stdout, " ", p)
+		}
+		fmt.Fprintln(t.Stdout)
 	}
 	return nil
 }
 
-// Open writes a file to the writer.
-func (t *T) Open() error {
-	c := t.NewCategory(t.Cat)
+// DumpFile writes a file to the writer.
+func (t *T) DumpFile() error {
+	puzzle := transpile.NewFsPuzzle(t.fs)
 
-	switch t.Filename {
+	switch t.filename {
 	case "puzzle.json", "":
 		// BUG(neale): we need a way to tell the transpiler to strip answers
-		p, err := c.Puzzle(t.Points)
+		p, err := puzzle.Puzzle()
 		if err != nil {
 			return err
 		}
@@ -99,14 +116,14 @@ func (t *T) Open() error {
 		if err != nil {
 			return err
 		}
-		t.w.Write(jp)
+		t.Stdout.Write(jp)
 	default:
-		f, err := c.Open(t.Points, t.Filename)
+		f, err := puzzle.Open(t.filename)
 		if err != nil {
 			return err
 		}
 		defer f.Close()
-		if _, err := io.Copy(t.w, f); err != nil {
+		if _, err := io.Copy(t.Stdout, f); err != nil {
 			return err
 		}
 	}
@@ -114,32 +131,43 @@ func (t *T) Open() error {
 	return nil
 }
 
-// Mothball writes a mothball to the writer.
-func (t *T) Mothball() error {
-	c := t.NewCategory(t.Cat)
+// DumpMothball writes a mothball to the writer.
+func (t *T) DumpMothball() error {
+	c := transpile.NewFsCategory(t.fs, "")
 	mb, err := transpile.Mothball(c)
 	if err != nil {
 		return err
 	}
-	if _, err := io.Copy(t.w, mb); err != nil {
+	if _, err := io.Copy(t.Stdout, mb); err != nil {
 		return err
 	}
 	return nil
 }
 
-// NewCategory returns a new Fs-backed category.
-func (t *T) NewCategory(name string) transpile.Category {
-	return transpile.NewFsCategory(t.Fs, name)
+// CheckAnswer prints whether an answer is correct.
+func (t *T) CheckAnswer() error {
+	c := transpile.NewFsPuzzle(t.fs)
+	if c.Answer(t.answer) {
+		fmt.Fprintln(t.Stdout, "correct")
+	} else {
+		fmt.Fprintln(t.Stdout, "wrong")
+	}
+	return nil
 }
 
 func main() {
 	// XXX: Convert puzzle.py to standalone thingies
 
 	t := &T{
-		w: os.Stdout,
+		Stdout: os.Stdout,
+		Stderr: os.Stderr,
+		Args:   os.Args,
 	}
-	action := t.ParseArgs()
-	if err := t.Handle(action); err != nil {
+	cmd, err := t.ParseArgs()
+	if err != nil {
+		log.Fatal(err)
+	}
+	if err := cmd(); err != nil {
 		log.Fatal(err)
 	}
 }
diff --git a/cmd/transpile/main_test.go b/cmd/transpile/main_test.go
index 77a6bdb..67c353a 100644
--- a/cmd/transpile/main_test.go
+++ b/cmd/transpile/main_test.go
@@ -3,7 +3,7 @@ package main
 import (
 	"bytes"
 	"encoding/json"
-	"strings"
+	"log"
 	"testing"
 
 	"github.com/dirtbags/moth/pkg/transpile"
@@ -23,62 +23,51 @@ pre:
 ---
 YAML body
 `)
-var testMothRfc822 = []byte(`author: test
-Author: Arthur
-author: Fred Flintstone
-answer: RFC822 answer
-
-RFC822 body
-`)
 
 func newTestFs() afero.Fs {
 	fs := afero.NewMemMapFs()
 	afero.WriteFile(fs, "cat0/1/puzzle.md", testMothYaml, 0644)
-	afero.WriteFile(fs, "cat0/1/moo.txt", []byte("Moo."), 0644)
-	afero.WriteFile(fs, "cat0/2/puzzle.md", testMothRfc822, 0644)
+	afero.WriteFile(fs, "cat0/1/moo.txt", testMothYaml, 0644)
+	afero.WriteFile(fs, "cat0/2/puzzle.moth", testMothYaml, 0644)
 	afero.WriteFile(fs, "cat0/3/puzzle.moth", testMothYaml, 0644)
 	afero.WriteFile(fs, "cat0/4/puzzle.md", testMothYaml, 0644)
 	afero.WriteFile(fs, "cat0/5/puzzle.md", testMothYaml, 0644)
-	afero.WriteFile(fs, "cat0/10/puzzle.md", []byte(`---
-Answers:
-  - moo
-Authors:
-  - bad field
----
-body
-`), 0644)
-	afero.WriteFile(fs, "cat0/20/puzzle.md", []byte("Answer: no\nBadField: yes\n\nbody\n"), 0644)
-	afero.WriteFile(fs, "cat0/21/puzzle.md", []byte("Answer: broken\nSpooon\n"), 0644)
-	afero.WriteFile(fs, "cat0/22/puzzle.md", []byte("---\nanswers:\n  - pencil\npre:\n unused-field: Spooon\n---\nSpoon?\n"), 0644)
-	afero.WriteFile(fs, "cat1/93/puzzle.md", []byte("Answer: no\n\nbody"), 0644)
-	afero.WriteFile(fs, "cat1/barney/puzzle.md", testMothYaml, 0644)
+	afero.WriteFile(fs, "cat0/10/puzzle.md", testMothYaml, 0644)
 	afero.WriteFile(fs, "unbroken/1/puzzle.md", testMothYaml, 0644)
-	afero.WriteFile(fs, "unbroken/1/moo.txt", []byte("Moo."), 0644)
-	afero.WriteFile(fs, "unbroken/2/puzzle.md", testMothRfc822, 0644)
+	afero.WriteFile(fs, "unbroken/2/puzzle.md", testMothYaml, 0644)
 	return fs
 }
 
+func (tp T) Run(args ...string) error {
+	tp.Args = append([]string{"transpile"}, args...)
+	command, err := tp.ParseArgs()
+	log.Println(tp.fs)
+	if err != nil {
+		return err
+	}
+	return command()
+}
+
 func TestEverything(t *testing.T) {
 	stdout := new(bytes.Buffer)
+	stderr := new(bytes.Buffer)
 	tp := T{
-		w:  stdout,
-		Fs: newTestFs(),
+		Stdout: stdout,
+		Stderr: stderr,
+		BaseFs: newTestFs(),
 	}
 
-	if err := tp.Handle("inventory"); err != nil {
+	if err := tp.Run("inventory"); err != nil {
 		t.Error(err)
 	}
-	if strings.TrimSpace(stdout.String()) != `{"cat0":[1,2,3,4,5,10,20,21,22],"cat1":[93],"unbroken":[1,2]}` {
+	if stdout.String() != "cat0 1 2 3 4 5 10\nunbroken 1 2\n" {
 		t.Errorf("Bad inventory: %#v", stdout.String())
 	}
 
 	stdout.Reset()
-	tp.Cat = "cat0"
-	tp.Points = 1
-	if err := tp.Handle("open"); err != nil {
+	if err := tp.Run("open", "-dir=cat0/1"); err != nil {
 		t.Error(err)
 	}
-
 	p := transpile.Puzzle{}
 	if err := json.Unmarshal(stdout.Bytes(), &p); err != nil {
 		t.Error(err)
@@ -88,8 +77,7 @@ func TestEverything(t *testing.T) {
 	}
 
 	stdout.Reset()
-	tp.Filename = "moo.txt"
-	if err := tp.Handle("open"); err != nil {
+	if err := tp.Run("open", "-dir=cat0/1", "-file=moo.txt"); err != nil {
 		t.Error(err)
 	}
 	if stdout.String() != "Moo." {
@@ -97,8 +85,9 @@ func TestEverything(t *testing.T) {
 	}
 
 	stdout.Reset()
-	tp.Cat = "unbroken"
-	if err := tp.Handle("mothball"); err != nil {
+	if err := tp.Run("mothball", "-dir=cat0"); err != nil {
+		t.Log(tp.BaseFs)
+		t.Log(tp.fs)
 		t.Error(err)
 	}
 	if stdout.Len() < 200 {
diff --git a/example-puzzles/example/3/mkpuzzle b/example-puzzles/example/3/mkpuzzle
new file mode 100755
index 0000000..b23b47f
--- /dev/null
+++ b/example-puzzles/example/3/mkpuzzle
@@ -0,0 +1,34 @@
+#! /bin/sh
+
+number=$(seq 20 500 | shuf -n 1)
+answer=$(echo $(grep -v "['A-Z]" /usr/share/dict/words | shuf -n 4))
+
+case "$1:$2" in
+    :)
+        cat <<EOT
+{
+    "Pre": {
+        "Authors": ["neale"],
+        "Body": "<p>Dynamic puzzles are provided with a JSON-generating <code>mkpuzzles</code> program in the puzzle directory.</p><img src='salad.jpg'>",
+        "Attachments": ["salad.jpg"]
+    },
+    "Answers": [
+        "$answer"
+    ],
+    "Debug": {
+        "Summary": "Dynamic puzzles",
+        "Hints": [
+            "Check the debug output to get the answer." 
+        ],
+        "Errors": [],
+        "Log": [
+            "$number is a positive integer"
+        ]
+    }
+}
+EOT
+        ;;
+    -file:salad.jpg)
+        cat salad.jpg
+        ;;
+esac
diff --git a/pkg/transpile/category.go b/pkg/transpile/category.go
index 22c57f2..fb67339 100644
--- a/pkg/transpile/category.go
+++ b/pkg/transpile/category.go
@@ -90,12 +90,12 @@ func (c FsCategory) Inventory() ([]int, error) {
 
 // Puzzle returns a Puzzle structure for the given point value.
 func (c FsCategory) Puzzle(points int) (Puzzle, error) {
-	return NewFsPuzzle(c.fs, points).Puzzle()
+	return NewFsPuzzlePoints(c.fs, points).Puzzle()
 }
 
 // Open returns an io.ReadCloser for the given filename.
 func (c FsCategory) Open(points int, filename string) (ReadSeekCloser, error) {
-	return NewFsPuzzle(c.fs, points).Open(filename)
+	return NewFsPuzzlePoints(c.fs, points).Open(filename)
 }
 
 // Answer checks whether an answer is correct.
diff --git a/pkg/transpile/inventory.go b/pkg/transpile/inventory.go
index 946d146..8c6f750 100644
--- a/pkg/transpile/inventory.go
+++ b/pkg/transpile/inventory.go
@@ -12,7 +12,7 @@ type Inventory map[string][]int
 
 // FsInventory returns a mapping of category names to puzzle point values.
 func FsInventory(fs afero.Fs) (Inventory, error) {
-	dirEnts, err := afero.ReadDir(fs, ".")
+	dirEnts, err := afero.ReadDir(fs, "")
 	if err != nil {
 		log.Print(err)
 		return nil, err
diff --git a/pkg/transpile/mothball.go b/pkg/transpile/mothball.go
index 1ef87f2..2126f9f 100644
--- a/pkg/transpile/mothball.go
+++ b/pkg/transpile/mothball.go
@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"log"
 )
 
 // Mothball packages a Category up for a production server run.
@@ -35,6 +36,7 @@ func Mothball(c Category) (*bytes.Reader, error) {
 		if err != nil {
 			return nil, err
 		}
+		log.Println(puzzlePath)
 		puzzle, err := c.Puzzle(points)
 		if err != nil {
 			return nil, err
diff --git a/pkg/transpile/puzzle.go b/pkg/transpile/puzzle.go
index 965aa33..006b021 100644
--- a/pkg/transpile/puzzle.go
+++ b/pkg/transpile/puzzle.go
@@ -11,6 +11,7 @@ import (
 	"log"
 	"net/mail"
 	"os/exec"
+	"path"
 	"strconv"
 	"strings"
 	"time"
@@ -110,24 +111,40 @@ type PuzzleProvider interface {
 	Answer(answer string) bool
 }
 
-// NewFsPuzzle returns a new FsPuzzle for points.
-func NewFsPuzzle(fs afero.Fs, points int) PuzzleProvider {
-	pfs := NewRecursiveBasePathFs(fs, strconv.Itoa(points))
-	if info, err := pfs.Stat("mkpuzzle"); (err == nil) && (info.Mode()&0100 != 0) {
-		if command, err := pfs.RealPath(info.Name()); err != nil {
-			log.Println("Unable to resolve full path to", info.Name(), pfs)
-		} else {
-			return FsCommandPuzzle{
-				fs:      pfs,
-				command: command,
-				timeout: 2 * time.Second,
+// NewFsPuzzle returns a new FsPuzzle.
+func NewFsPuzzle(fs afero.Fs) PuzzleProvider {
+	var command string
+
+	if info, err := fs.Stat("mkpuzzle"); (err == nil) && (info.Mode()&0100 != 0) {
+		// Try to get the actual path to the executable
+		if pfs, ok := fs.(*RecursiveBasePathFs); ok {
+			if command, err = pfs.RealPath(info.Name()); err != nil {
+				log.Println("Unable to resolve full path to", info.Name(), pfs)
+			}
+		} else if pfs, ok := fs.(*afero.BasePathFs); ok {
+			if command, err = pfs.RealPath(info.Name()); err != nil {
+				log.Println("Unable to resolve full path to", info.Name(), pfs)
 			}
 		}
 	}
 
-	return FsPuzzle{
-		fs: pfs,
+	if command != "" {
+		return FsCommandPuzzle{
+			fs:      fs,
+			command: command,
+			timeout: 2 * time.Second,
+		}
 	}
+
+	return FsPuzzle{
+		fs: fs,
+	}
+
+}
+
+// NewFsPuzzlePoints returns a new FsPuzzle for points.
+func NewFsPuzzlePoints(fs afero.Fs, points int) PuzzleProvider {
+	return NewFsPuzzle(NewRecursiveBasePathFs(fs, strconv.Itoa(points)))
 }
 
 // FsPuzzle is a single puzzle's directory.
@@ -332,6 +349,7 @@ func (fp FsCommandPuzzle) Puzzle() (Puzzle, error) {
 	defer cancel()
 
 	cmd := exec.CommandContext(ctx, fp.command)
+	cmd.Dir = path.Dir(fp.command)
 	stdout, err := cmd.Output()
 	if err != nil {
 		return Puzzle{}, err
@@ -364,6 +382,7 @@ func (fp FsCommandPuzzle) Open(filename string) (ReadSeekCloser, error) {
 	defer cancel()
 
 	cmd := exec.CommandContext(ctx, fp.command, "-file", filename)
+	cmd.Dir = path.Dir(fp.command)
 	out, err := cmd.Output()
 	buf := nopCloser{bytes.NewReader(out)}
 	if err != nil {
@@ -379,6 +398,7 @@ func (fp FsCommandPuzzle) Answer(answer string) bool {
 	defer cancel()
 
 	cmd := exec.CommandContext(ctx, fp.command, "-answer", answer)
+	cmd.Dir = path.Dir(fp.command)
 	out, err := cmd.Output()
 	if err != nil {
 		log.Printf("ERROR: checking answer: %s", err)
diff --git a/pkg/transpile/puzzle_test.go b/pkg/transpile/puzzle_test.go
index 7cc1bb9..914624e 100644
--- a/pkg/transpile/puzzle_test.go
+++ b/pkg/transpile/puzzle_test.go
@@ -13,7 +13,7 @@ func TestPuzzle(t *testing.T) {
 	catFs := NewRecursiveBasePathFs(puzzleFs, "cat0")
 
 	{
-		pd := NewFsPuzzle(catFs, 1)
+		pd := NewFsPuzzlePoints(catFs, 1)
 		p, err := pd.Puzzle()
 		if err != nil {
 			t.Error(err)
@@ -31,7 +31,7 @@ func TestPuzzle(t *testing.T) {
 	}
 
 	{
-		p, err := NewFsPuzzle(catFs, 2).Puzzle()
+		p, err := NewFsPuzzlePoints(catFs, 2).Puzzle()
 		if err != nil {
 			t.Error(err)
 		}
@@ -46,21 +46,21 @@ func TestPuzzle(t *testing.T) {
 		}
 	}
 
-	if _, err := NewFsPuzzle(catFs, 3).Puzzle(); err != nil {
+	if _, err := NewFsPuzzlePoints(catFs, 3).Puzzle(); err != nil {
 		t.Error("Legacy `puzzle.moth` file:", err)
 	}
 
-	if _, err := NewFsPuzzle(catFs, 99).Puzzle(); err == nil {
+	if _, err := NewFsPuzzlePoints(catFs, 99).Puzzle(); err == nil {
 		t.Error("Non-existent puzzle", err)
 	}
 
-	if _, err := NewFsPuzzle(catFs, 10).Puzzle(); err == nil {
+	if _, err := NewFsPuzzlePoints(catFs, 10).Puzzle(); err == nil {
 		t.Error("Broken YAML")
 	}
-	if _, err := NewFsPuzzle(catFs, 20).Puzzle(); err == nil {
+	if _, err := NewFsPuzzlePoints(catFs, 20).Puzzle(); err == nil {
 		t.Error("Bad RFC822 header")
 	}
-	if _, err := NewFsPuzzle(catFs, 21).Puzzle(); err == nil {
+	if _, err := NewFsPuzzlePoints(catFs, 21).Puzzle(); err == nil {
 		t.Error("Boken RFC822 header")
 	}
 
@@ -69,7 +69,7 @@ func TestPuzzle(t *testing.T) {
 		if err := afero.WriteFile(fs, "1/mkpuzzle", []byte("bleat"), 0755); err != nil {
 			t.Error(err)
 		}
-		p := NewFsPuzzle(fs, 1)
+		p := NewFsPuzzlePoints(fs, 1)
 		if _, ok := p.(FsCommandPuzzle); !ok {
 			t.Error("We didn't get an FsCommandPuzzle")
 		}
@@ -82,15 +82,15 @@ func TestPuzzle(t *testing.T) {
 func TestFsPuzzle(t *testing.T) {
 	catFs := NewRecursiveBasePathFs(NewRecursiveBasePathFs(afero.NewOsFs(), "testdata"), "static")
 
-	if _, err := NewFsPuzzle(catFs, 1).Puzzle(); err != nil {
+	if _, err := NewFsPuzzlePoints(catFs, 1).Puzzle(); err != nil {
 		t.Error(err)
 	}
 
-	if _, err := NewFsPuzzle(catFs, 2).Puzzle(); err != nil {
+	if _, err := NewFsPuzzlePoints(catFs, 2).Puzzle(); err != nil {
 		t.Error(err)
 	}
 
-	mkpuzzleDir := NewFsPuzzle(catFs, 3)
+	mkpuzzleDir := NewFsPuzzlePoints(catFs, 3)
 	if _, err := mkpuzzleDir.Puzzle(); err != nil {
 		t.Error(err)
 	}
diff --git a/theme/basic.css b/theme/basic.css
index e7bb81e..f00195e 100644
--- a/theme/basic.css
+++ b/theme/basic.css
@@ -91,9 +91,15 @@ input:invalid {
 
 
 #devel {
-  background-color: #c88;
+  background-color: #eee;
   color: black;
 }
+#devel .string {
+  color: #9c27b0;
+}
+#devel .body {
+  background-color: #ffc107;
+}
 .kvpair {
   border: solid black 2px;
 }
diff --git a/theme/index.html b/theme/index.html
index f72f5e1..488e452 100644
--- a/theme/index.html
+++ b/theme/index.html
@@ -5,7 +5,6 @@
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width">
     <link rel="stylesheet" href="basic.css">
-    <script src="moth-pwa.js" type="text/javascript"></script>
     <script src="moth.js"></script>
     <link rel="manifest" href="manifest.json">
   </head>
diff --git a/theme/moth-pwa.js b/theme/moth-pwa.js
deleted file mode 100644
index 780bd1d..0000000
--- a/theme/moth-pwa.js
+++ /dev/null
@@ -1,17 +0,0 @@
-function pwa_init() {
-  if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.register("./sw.js").then(function(reg) {
-    })
-    .catch(err => {
-      console.warn("Error while registering service worker", err)
-    })
-  } else {
-    console.log("Service workers not supported. Some offline functionality may not work")
-  }
-}
-
-if (document.readyState === "loading") {
-  document.addEventListener("DOMContentLoaded", pwa_init)
-} else {
-  pwa_init()
-}
diff --git a/theme/puzzle.html b/theme/puzzle.html
index a7be166..37206f6 100644
--- a/theme/puzzle.html
+++ b/theme/puzzle.html
@@ -5,7 +5,6 @@
     <link rel="stylesheet" href="basic.css">
     <meta name="viewport" content="width=device-width">
     <meta charset="utf-8">
-    <script src="moth-pwa.js"></script>
     <script src="puzzle.js"></script>
     <script>
     
diff --git a/theme/puzzle.js b/theme/puzzle.js
index a9b8cdb..6727ac5 100644
--- a/theme/puzzle.js
+++ b/theme/puzzle.js
@@ -1,8 +1,18 @@
 // jshint asi:true
 
+// prettify adds classes to various types, returning an HTML string.
+function prettify(key, val) {
+  console.log(key, val)
+  switch (key) {
+    case "Body":
+      return '[HTML]'
+  }
+  return val
+}
+
 // devel_addin drops a bunch of development extensions into element e.
 // It will only modify stuff inside e.
-function devel_addin(obj, e) {
+function devel_addin(e) {
   let h = document.createElement("h2")
   e.appendChild(h)
   h.textContent = "Development Options"
@@ -11,44 +21,10 @@ function devel_addin(obj, e) {
   e.appendChild(g)
   g.innerText = "This section will not appear for participants."
   
-  let keys = Object.keys(obj)
-  keys.sort()
-  for (let key of keys) {
-    switch (key) {
-      case "body":
-        continue
-    }
-    let val = obj[key]
-
-    if ((! val) || (val.length === 0)) {
-      // Empty, skip it
-      continue
-    }
-
-    let d = document.createElement("div")
-    e.appendChild(d)
-    d.classList.add("kvpair")
-    
-    let ktxt = document.createElement("span")
-    d.appendChild(ktxt)
-    ktxt.textContent = key
-    
-    if (Array.isArray(val)) {
-      let vi = document.createElement("select")
-      d.appendChild(vi)
-      vi.multiple = true
-      for (let a of val) {
-        let opt = document.createElement("option")
-        vi.appendChild(opt)
-        opt.innerText = a
-      }
-    } else {
-      let vi = document.createElement("input")
-      d.appendChild(vi)
-      vi.value = val
-      vi.disabled = true
-    }
-  }
+  let hobj = JSON.stringify(window.puzzle, prettify, 2)
+  let d = e.appendChild(document.createElement("pre"))
+  d.classList.add("object")
+  d.innerHTML = hobj
 }
 
 // Hash routine used in v3.4 and earlier
@@ -73,22 +49,18 @@ async function sha256Hash(message) {
 
 // Is the provided answer possibly correct?
 async function possiblyCorrect(answer) {
-  for (let correctHash of window.puzzle.hashes) {
-    // CPU time is cheap. Especially if it's not our server's time.
-    // So we'll just try absolutely everything and see what happens.
-    // We're counting on hash collisions being extremely rare with the algorithm we use.
-    // And honestly, this pales in comparison to the amount of CPU being eaten by
-    // something like the github 404 page.
-    
+  let pattern = window.puzzle.Pre.AnswerPattern || []
+
+  for (let correctHash of window.puzzle.Pre.AnswerHashes) {    
     if (djb2hash(answer) == correctHash) {
       return answer
     }
     for (let end = 0; end <= answer.length; end += 1) {
-      if (window.puzzle.xAnchors && window.puzzle.xAnchors.includes("end") && (end != answer.length)) {
+      if (pattern.includes("end") && (end != answer.length)) {
         continue
       }
       for (let beg = 0; beg < answer.length; beg += 1) {
-        if (window.puzzle.xAnchors && window.puzzle.xAnchors.includes("begin") && (beg != 0)) {
+        if (pattern.includes("begin") && (beg != 0)) {
           continue
         }
         let sub = answer.substring(beg, end)
@@ -148,66 +120,63 @@ function submit(e) {
   })
 }
 
-function loadPuzzle(categoryName, points, puzzleId) {
+async function loadPuzzle(categoryName, points, puzzleId) {
   let puzzle = document.getElementById("puzzle")
   let base = "content/" + categoryName + "/" + puzzleId + "/"
 
-  fetch(base + "puzzle.json")
-  .then(resp => {
-    return resp.json()
-  })
-  .then(obj => {
-    // Populate authors
-    document.getElementById("authors").textContent = obj.authors.join(", ")
-    
-    // Make the whole puzzle available
-    window.puzzle = obj
-    
-    // If answers are provided, this is the devel server
-    if (obj.answers) {
-      devel_addin(obj, document.getElementById("devel"))
-    }
-    
-    // Load scripts
-    for (let script of obj.scripts) {
-      let st = document.createElement("script")
-      document.head.appendChild(st)
-      st.src = base + script
-    }
-    
-    // List associated files
-    for (let fn of obj.files) {
-      let li = document.createElement("li")
-      let a = document.createElement("a")
-      a.href = base + fn
-      a.innerText = fn
-      li.appendChild(a)
-      document.getElementById("files").appendChild(li)
-    }
-
-    // Prefix `base` to relative URLs in the puzzle body
-    let doc = new DOMParser().parseFromString(obj.body, "text/html")
-    for (let se of doc.querySelectorAll("[src],[href]")) {
-      se.outerHTML = se.outerHTML.replace(/(src|href)="([^/]+)"/i, "$1=\"" + base + "$2\"")
-    }
-    
-    // If a validation pattern was provided, set that
-    if (obj.pattern) {
-      document.querySelector("#answer").pattern = obj.pattern
-    }
-
-    // Replace puzzle children with what's in `doc`
+  let resp = await fetch(base + "puzzle.json")
+  if (! resp.ok) {
+    console.log(resp)
+    let err = await resp.text()
     Array.from(puzzle.childNodes).map(e => e.remove())
-    Array.from(doc.body.childNodes).map(e => puzzle.appendChild(e))
-  })
-  .catch(err => {
-    // Show error to the user
-    Array.from(puzzle.childNodes).map(e => e.remove())
-    let p = document.createElement("p")
-    puzzle.appendChild(p)
+    p = puzzle.appendChild(document.createElement("p"))
     p.classList.add("Error")
     p.textContent = err
-  })
+    return
+  }
+
+  // Make the whole puzzle available
+  window.puzzle = await resp.json()
+  
+  // Populate authors
+  document.getElementById("authors").textContent = window.puzzle.Pre.Authors.join(", ")
+
+  // If answers are provided, this is the devel server
+  if (window.puzzle.Answers) {
+    devel_addin(document.getElementById("devel"))
+  }
+  
+  // Load scripts
+  for (let script of (window.puzzle.Pre.Scripts || [])) {
+    let st = document.createElement("script")
+    document.head.appendChild(st)
+    st.src = base + script
+  }
+  
+  // List associated files
+  for (let fn of (window.puzzle.Pre.Attachments || [])) {
+    let li = document.createElement("li")
+    let a = document.createElement("a")
+    a.href = base + fn
+    a.innerText = fn
+    li.appendChild(a)
+    document.getElementById("files").appendChild(li)
+  }
+
+  // Prefix `base` to relative URLs in the puzzle body
+  let doc = new DOMParser().parseFromString(window.puzzle.Pre.Body, "text/html")
+  for (let se of doc.querySelectorAll("[src],[href]")) {
+    se.outerHTML = se.outerHTML.replace(/(src|href)="([^/]+)"/i, "$1=\"" + base + "$2\"")
+  }
+  
+  // If a validation pattern was provided, set that
+  if (window.puzzle.Pre.AnswerPattern) {
+    document.querySelector("#answer").pattern = window.puzzle.Pre.AnswerPattern
+  }
+
+  // Replace puzzle children with what's in `doc`
+  Array.from(puzzle.childNodes).map(e => e.remove())
+  Array.from(doc.body.childNodes).map(e => puzzle.appendChild(e))
   
   document.title = categoryName + " " + points
   document.querySelector("body > h1").innerText = document.title
diff --git a/theme/scoreboard.html b/theme/scoreboard.html
index ea263c7..b6b7647 100644
--- a/theme/scoreboard.html
+++ b/theme/scoreboard.html
@@ -4,7 +4,6 @@
     <title>Scoreboard</title>
     <link rel="stylesheet" href="basic.css">
     <meta name="viewport" content="width=device-width">
-    <script src="moth-pwa.js"></script>
     <script src="moment.min.js" async></script>
     <script src="Chart.min.js" async></script>
     <script src="scoreboard.js" async></script>
diff --git a/theme/sw.js b/theme/sw.js
deleted file mode 100644
index 8bdb2b0..0000000
--- a/theme/sw.js
+++ /dev/null
@@ -1,49 +0,0 @@
-var cacheName =  "moth:v1"
-var content = [
-  "index.html",
-  "basic.css",
-  "puzzle.js",
-  "puzzle.html",
-  "scoreboard.html",
-  "moth.js",
-  "sw.js",
-  "points.json",
-]
-
-self.addEventListener("install", function(e) {
-  e.waitUntil(
-    caches.open(cacheName).then(function(cache) {
-      return cache.addAll(content).then(
-        function() {
-          self.skipWaiting()
-        })
-    })
-  )
-})
-
-/* Attempt to fetch live resources, first, then fall back to cache */
-self.addEventListener('fetch', function(event) {
-  let cache_used = false
-
-  event.respondWith(
-    fetch(event.request)
-     .catch(function(evt) {
-      //console.log("Falling back to cache for " + event.request.url)
-      cache_used = true
-      return caches.match(event.request, {ignoreSearch: true})
-    }).then(function(res) {
-      if (res && res.ok) {
-        let res_clone = res.clone()
-	if (! cache_used && event.request.method == "GET" ) {
-          caches.open(cacheName).then(function(cache) {
-            cache.put(event.request, res_clone)
-            //console.log("Storing " + event.request.url + " in cache")
-          })
-	} 
-        return res
-      } else {
-        console.log("Failed to retrieve resource")
-      }
-    })
-  )
-})