This is one of the most common and important organizational questions for Anki users!
In terms of memory retention and recalling, the approach that is generally recommended by Anki power users and backed by cognitive science principles like Interleaving is:
🥇 The "One Large Deck" (Master Deck) Approach
A single, large deck, often referred to as a "Master Deck" or "Unified Deck," promotes better retention and recall outside of the study environment.
Why One Master Deck is Better for Memory
| Principle | One Master Deck | Subdecks (Studied Separately) |
| Interleaving | High | Low |
| Cards from different topics (e.g., History, Geography, Current Affairs) are mixed randomly. This forces your brain to switch context frequently, increasing the retrieval effort and strengthening the memory trace [1.5, 1.6, 2.2]. | Cards from one topic are grouped together (e.g., all "Uttarakhand Schemes" cards). This creates contextual cues, making it easier to answer (you know the answer is related to a scheme) but leading to weaker memory and less effective recall in a real-world, random exam setting [1.5, 2.7]. | |
| Desirable Difficulty | High | Low |
| The difficulty is higher because you have to retrieve the answer without the aid of a topic hint. This increased retrieval effort translates to slower forgetting and better long-term storage strength [2.2]. | The context makes retrieval too easy, potentially giving you an inflated sense of mastery [1.5]. | |
| Scheduling Optimization | Better | Complex |
| All cards share the same set of core Anki/FSRS settings. This allows the algorithm to gather maximum data from your review history to optimize intervals for your overall learning pace [1.3]. | While subdecks can use the same settings, the limits (New cards/Max reviews) of the parent deck control the total number of cards seen, which can add complexity and potentially interrupt the intended flow if you study the subdecks individually [1.1, 1.2]. |
🛠️ When Subdecks (or Tags) Are Necessary
While a single deck is ideal for pure retention, organization is still key for management. This is where Subdecks and, more flexibly, Tags come in.
1. Use Subdecks When:
You need different scheduling settings (Presets): This is the primary legitimate reason. For example, you might need a much shorter review cycle for a difficult language vocabulary deck than for a general history deck [1.3].
You need separate daily limits: You might want to limit new cards for a particular subject (e.g., "Review everything, but only 5 new cards from Math today") [1.1].
Broad Categorization: Use them for very broad subjects, like
01::Science,02::History,03::Current Affairs. The key is to study the Parent Deck (00::MasterDeck) to get the benefit of interleaving, letting Anki pull cards from all subdecks randomly [3.4].
2. The Best Organizational Alternative: Tags
For organization that does not interfere with the scheduling or mixing of cards, Tags are superior to subdecks:
Flexibility: A single card can have multiple tags (e.g.,
current_affairs_uttarakhand,schemes,environment). A card can only belong to one deck [1.4, 2.7].Searching: You can easily use the browser to search for all cards with a specific tag to create a Filtered Deck (e.g., to cram for all "Uttarakhand Schemes" right before a test), and then delete the Filtered Deck without affecting the card's history [3.3].
Recommendation Summary
| Goal | Best Approach |
| Max Memory Retention & Recall | One Master Deck (Study this deck daily) |
| Organizing Content | Use Tags (e.g., current_affairs::uttarakhand::schemes) |
| Cramming for a Specific Topic | Create a Filtered Deck based on a Tag (and delete it after the session) |
| Separating Card Settings | Use Subdecks (and assign different Presets) |
For your Uttarakhand Current Affairs, I suggest putting all cloze cards into one large "Current Affairs Master" deck and using tags like uttarakhand::2025::schemes or uttarakhand::2025::summit for organization. This lets you study everything interleaved while maintaining the ability to filter by topic if needed.