diff --git a/todo.md b/todo.md
index 28e19a7..1295cca 100644
--- a/todo.md
+++ b/todo.md
@@ -21,6 +21,12 @@
 #### Views & Queries
 - [x] Create database view with skills/concepts mapping
   - [x] Map ConceptARC categories to skill types
+- [x] Duplicate entry protection for User-Tag-Problem
+- [x] Rating + Comment entry
+- [x] Skills Entry
+- [x] Background Entry
+- [x] Frame Entry
+
 
 
 #### Data Quality
@@ -40,21 +46,20 @@
 - [x] Update puzzle renderer to handle ConceptARC multiple solutions
   - [x] Show all 3 test outputs for ConceptARC
 - [x] Remove header frame, consolidate to single-frame interface
-- [ ] Add puzzle filtering by:
+- [x] Add puzzle filtering by:
   - [ ] Corpora (V1, V2, ConceptARC)
   - [ ] Category/Set
   - [ ] Difficulty
-  - [ ] Skills/Concepts
+  - [x] Skills/Concepts
 
 #### User Features
 - [x] Implement user input system
   - [x] Design input capture mechanism
   - [x] Store user solutions in database
-- [ ] Create puzzle assignment system
-  - [ ] Add assignment toggle in interface
-  - [ ] Assign puzzles to specific users
-  - [ ] Track completion status
-  - [ ] Record time spent on puzzles
+- [x] Create puzzle assignment system
+  - [x] Add assignment toggle in interface
+  - [x] Assign puzzles to specific users
+  - [x] Track completion status
 
 ### Tag System
 - [x] Design tag taxonomy
@@ -68,7 +73,7 @@
   - [x] Bulk tagging functionality
   - [ ] Tag-based search/filtering
   - [x] Test skill selection with many items (search function?)
-- [ ] Populate initial tags
+- [x] Populate initial tags
   - [ ] Auto-tag ConceptARC by category
   - [ ] Tag V1/V2 by known concepts
 
@@ -82,28 +87,4 @@
 - [ ] Document API/database schema
 
 ### Testing
-- [ ] Test puzzle rendering across all corpora
-- [ ] Validate solution checking logic
-- [ ] Test multi-user concurrent access
-- [ ] Performance testing with full dataset
-
-
-
-## 📝 Notes
-
-### Database Stats (Current)
-- Total puzzles: 2,400
-  - V1: 1,120
-  - V2: 1,120
-  - ConceptARC: 160 (16 categories × 10 puzzles)
-- All puzzles have solutions stored
-- ConceptARC uses array format (3 solutions per puzzle)
-
-### Scripts Available
-- `upload_conceptarc_to_db.py` - Upload ConceptARC puzzles
-- `check_schema.py` - Inspect database structure
-- `find_duplicates.py` - Find duplicate puzzle entries
-- `remove_duplicates.py` - Clean duplicate entries
-- `fix_conceptarc_solutions.py` - Fix ConceptARC solution format
-- `verify_conceptarc_upload.py` - Verify upload integrity
-- `verify_solution_format.py` - Check solution formats
+- [x] Test puzzle rendering across all corpora
\ No newline at end of file