Complete: Create systems-and-logic-overview.md parent category page

src/SUMMARY.md

@@ -85,12 +85,10 @@ A taxonomy of puzzle design patterns from classic point-and-click adventure game
 
 - [Multi-Character Coordination](puzzles/multi-character-coordination.md)
 
-# Programming & Logic
+# Systems & Logic
 
+- [Systems & Logic Overview](puzzles/systems-and-logic-overview.md)
 - [Robot Programming / Color-Encoded Sequences](puzzles/robot-programming.md)
-
-# Combat Progression
-
 - [Escalating Combat Progression](puzzles/escalating-combat-progression.md)
 
 # Infiltration & Stealth

src/puzzles/systems-and-logic-overview.md

@@ -0,0 +1,19 @@
+# Systems & Logic Puzzles
+
+Systems & logic puzzles involve formal rule-based mechanics where players must understand and exploit explicit systems rather than relying on exploration or social interaction. The core mechanic is **System Manipulation**—players analyze patterns, predict outcomes, and orchestrate sequences within constrained logical frameworks. These puzzles reward algorithmic thinking and mastery of defined rules over creative interpretation.
+
+Unlike inventory puzzles that depend on item combinations or observation puzzles that rely on environmental scanning, systems puzzles present closed mechanics with deterministic solutions. Players cannot trial-and-error their way through; they must deduce the underlying logic governing the system's behavior.
+
+## Robot Programming / Color-Encoded Sequences
+
+[Robot Programming](puzzles/robot-programming.md) represents pure logical execution within constrained rule sets. Players receive explicit commands or patterns and must sequence them to achieve a goal. Success requires planning multiple steps ahead while respecting system constraints—insufficient memory, limited command types, or resource caps that force optimization rather than brute-force solutions.
+
+## Escalating Combat Progression
+
+[Escalating Combat Progression](puzzles/escalating-combat-progression.md) reframes combat as puzzle chains where each encounter teaches mechanics that culminate in boss fight mastery. Rather than statistical progression, players must apply learned patterns and exploit enemy behavior systems. Each battle adds a layer of complexity, requiring synthesis of previously-mastered mechanics rather than memorization of attack sequences.
+
+## Distinguishing Characteristics
+
+Systems & logic puzzles stand apart through their **deterministic nature**: given identical inputs, the system always produces identical outputs. This contrasts with brokerage (where NPC behavior may vary) or meta-construction (which depends on cumulative item discovery). Players solve these through analysis and prediction, not experimentation or resource accumulation.
+
+The mechanical depth comes from layered complexity—simple individual rules that generate sophisticated interactions when combined. Mastery requires understanding each rule's boundaries and how they conflict or reinforce one another within the system.