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+# Reasoning Techniques Deep Dive
+
+## Chain of Thought (CoT) Variants
+
+### Zero-Shot CoT
+```
+[Task description]
+
+Think step by step before answering.
+```
+**Use when**: Quick reasoning, no examples available
+**Effectiveness**: +40-60% on reasoning tasks
+
+### Few-Shot CoT
+```
+Example 1:
+Q: [Question]
+A: Let me think through this...
+   Step 1: [Reasoning]
+   Step 2: [Reasoning]
+   Therefore: [Answer]
+
+Example 2:
+Q: [Question]
+A: Breaking this down...
+   First: [Reasoning]
+   Next: [Reasoning]
+   So: [Answer]
+
+Now solve:
+Q: [Your question]
+```
+**Use when**: Complex reasoning, pattern demonstration needed
+**Effectiveness**: +50-80% on complex tasks
+
+### Auto-CoT
+```
+Let me approach this systematically:
+1. Identify the key elements
+2. Analyze relationships
+3. Apply relevant principles
+4. Draw conclusions
+5. Verify my reasoning
+```
+**Use when**: General problem-solving, exploratory reasoning
+
+## Tree of Thoughts (ToT)
+
+### Implementation Pattern
+```
+Problem: [Complex problem]
+
+Generate 3 different approaches:
+
+Approach A:
+- Method: [Description]
+- Reasoning: [Why this might work]
+- Potential issues: [Risks]
+- Confidence: [1-10]
+
+Approach B:
+- Method: [Description]
+- Reasoning: [Why this might work]
+- Potential issues: [Risks]
+- Confidence: [1-10]
+
+Approach C:
+- Method: [Description]
+- Reasoning: [Why this might work]
+- Potential issues: [Risks]
+- Confidence: [1-10]
+
+Evaluate branches:
+- Which has highest success probability?
+- Which has fewest risks?
+- Which is most feasible?
+
+Selected approach: [Best option with justification]
+Execution: [Step-by-step implementation]
+```
+
+**Use when**: Strategic decisions, multiple valid paths, high-stakes problems
+
+## Self-Consistency
+
+### Process
+1. Generate 5 responses at temp=0.7
+2. Extract final answers from each
+3. Take majority vote
+4. Report confidence = agreement %
+
+### Implementation
+```
+Run this prompt 5 times (or use n=5 parameter):
+[Your reasoning task]
+Think step by step and provide final answer.
+
+Aggregate: If 4/5 agree = high confidence
+          If 3/5 agree = medium confidence
+          If split = low confidence, needs review
+```
+
+**Use when**: Math, logic, factual questions with verifiable answers
+
+## ReAct (Reasoning + Acting)
+
+### Full Pattern
+```
+Task: [Goal to achieve]
+
+Thought 1: I need to understand the current situation.
+Action 1: [Observation or tool use]
+Observation 1: [Result from action]
+
+Thought 2: Based on this, I should [next logical step].
+Action 2: [Next action]
+Observation 2: [Result]
+
+Thought 3: Now I can see that [insight].
+Action 3: [Verification or next step]
+Observation 3: [Result]
+
+Thought 4: I have enough information to conclude.
+Final Answer: [Conclusion with reasoning]
+```
+
+**Use when**: Tool-augmented reasoning, research tasks, multi-step analysis
+
+## Least-to-Most Prompting
+
+### Structure
+```
+Complex problem: [Full problem statement]
+
+Step 1: Decomposition
+Break this into simpler subproblems, ordered from easiest to hardest:
+1. [Simplest subproblem]
+2. [Next subproblem, may depend on 1]
+3. [Harder subproblem, may depend on 1,2]
+4. [Final subproblem requiring all above]
+
+Step 2: Sequential Solution
+Subproblem 1: [Solution]
+Using result from 1, Subproblem 2: [Solution]
+Using results from 1,2, Subproblem 3: [Solution]
+Using all results, Subproblem 4: [Solution]
+
+Final integrated answer: [Complete solution]
+```
+
+**Use when**: Mathematical word problems, multi-step procedures, compositional tasks
+
+## Decomposed Prompting (DECOMP)
+
+### Pattern
+```
+Task: [Complex task]
+
+Required capabilities:
+- [Capability 1]: Use [specialized prompt/tool]
+- [Capability 2]: Use [specialized prompt/tool]
+- [Capability 3]: Use [specialized prompt/tool]
+
+Orchestration:
+1. Call [Capability 1] with [input] → get [output1]
+2. Call [Capability 2] with [output1] → get [output2]
+3. Call [Capability 3] with [output2] → get [final output]
+
+Integrate results: [Final response]
+```
+
+**Use when**: Tasks requiring diverse expertise, specialized sub-tasks
+
+## Constitutional AI Reasoning
+
+### Self-Critique Pattern
+```
+Initial response: [Generated content]
+
+Critique against principles:
+- Is it helpful? [Yes/No + reasoning]
+- Is it harmless? [Yes/No + reasoning]
+- Is it honest? [Yes/No + reasoning]
+
+If any No:
+Revised response that addresses [specific issues]:
+[Improved content]
+```
+
+## Choosing the Right Technique
+
+| Task Type | Best Technique |
+|-----------|---------------|
+| Simple reasoning | Zero-shot CoT |
+| Complex multi-step | Few-shot CoT |
+| Strategic decisions | Tree of Thoughts |
+| Factual verification | Self-Consistency |
+| Tool-using tasks | ReAct |
+| Word problems | Least-to-Most |
+| Specialized sub-tasks | DECOMP |
+| Safety-critical | Constitutional AI |