Merge pull request #40 from mennlo/add-back-defense-clas

feat(): add back defense class

Author: mennlo

.github/copilot-instructions.md renamed to .github/instructions/copilot-instructions.md

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+# Back Defense and Prevention Class
+**Class Length:** 1 hour
+
+This class focuses on developing defensive skills and prevention techniques against back control progression. Students will learn to defend at each stage of back control development, from initial standing contact through various levels of control. The class follows a progressive flow: standing separation to bodylock, bodylock to turtle breakdown, turtle to hip control, and then defending against increasingly dominant back control positions.
+
+This class consists of several progressive drills that build upon each other. Each drill is available as an individual game file for reference.
+
+1. [Progressive Touch to Bodylock](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/standing/progressive-touch-to-bodylock.md)
+2. [Rear Standing Bodylock Control](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/standing/rear-standing-bodylock-control.md)
+3. [Turtle Defense and Hip Control](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/turtle-defense-and-hip-control.md)
+4. [Back Control Transitions](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-transitions.md)
+5. [Back Control Escape Progression](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-escape-progression.md)
+6. [Back Control Any Attack](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-any-attack.md)
+
+**Total Drilling Time:** 36 minutes
+- Standing Drills: 12 minutes
+  - Progressive Touch to Bodylock: 6 minutes (2 x 3-minute rounds)
+  - Rear Standing Bodylock Control: 6 minutes (2 x 3-minute rounds)
+- Turtle and Hip Control Drills: 6 minutes
+  - Turtle Defense and Hip Control: 6 minutes (2 x 3-minute rounds)
+- Back Control Defense Drills: 18 minutes
+  - Back Control Transitions: 6 minutes (2 x 3-minute rounds)
+  - Back Control Escape Progression: 6 minutes (3 x 2-minute rounds)
+  - Back Control Any Attack: 6 minutes (2 x 3-minute rounds)
+
+## Standing Drills
+
+### 1.1 - [Progressive Touch to Bodylock](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/standing/progressive-touch-to-bodylock.md)
+
+**Overview:** A competitive standing drill where both partners start with no connections and race to achieve a bodylock by completing three progressive touches.
+
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+**Position:** Standing facing your partner with no initial connections  
+**Objective:** Complete three touches before establishing a bodylock, or bypass requirements with a double leg takedown  
+**Win:** Successfully complete three touches and establish a bodylock, or execute a double leg takedown
+
+### 1.2 - [Rear Standing Bodylock Control](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/standing/rear-standing-bodylock-control.md)
+
+**Overview:** A standing drill focusing on controlling from a rear bodylock position versus defending and escaping the bodylock.
+
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+#### Attacking Player
+**Position:** Standing behind your partner with a bodylock  
+**Objective:** Force your partner's hands to the mat while maintaining the bodylock  
+**Win:** No win condition, continuously trying to get opponent's hands to the mat
+
+#### Defending Player
+**Position:** Standing with your partner behind you in a bodylock  
+**Objective:** Maintain your base and turn to face your partner  
+**Win:** Successfully break the bodylock and turn to face your partner
+
+## Turtle and Hip Control Drills
+
+### 2.1 - [Turtle Defense and Hip Control](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/turtle-defense-and-hip-control.md)
+
+**Overview:** A turtle position drill where the defending player works to prevent hip control while the attacking player tries to establish dominance from turtle.
+
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+#### Attacking Player
+**Position:** Behind your partner who is in turtle position  
+**Objective:** Establish hip control and work to break down the turtle position  
+**Win:** Get both hooks in with seatbelt grip, or break down turtle to hip and establish chest-to-back contact with seatbelt grip  
+
+#### Defending Player
+**Position:** In turtle position with your partner behind you  
+**Objective:** Prevent hip control and improve your position  
+**Win:** Successfully turn to guard or stand up while preventing hip control
+
+## Back Control Defense Drills
+
+### 3.1 - [Back Control Transitions](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-transitions.md)
+
+**Overview:** A back control drill focused on transitioning to and maintaining back control position from various starting positions and defending against common escapes.
+
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+#### Back Controller
+**Position:** Starting chest to back with your partner with a seatbelt grip or similar control  
+**Objective:** Transition to back control and establish dominant positioning with hooks or body triangle  
+**Win:** Establish back control with both hooks in or body triangle for 3 seconds
+
+#### Defending Player
+**Position:** Starting on your side with your partner's chest connected to your back  
+**Objective:** Prevent your partner from establishing back control with hooks and work to improve your position  
+**Win:** Turn to face your partner or successfully escape back to a neutral position
+
+### 3.2 - [Back Control Escape Progression](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-escape-progression.md)
+
+**Overview:** A progressive drill with three increasing levels of back control difficulty that the defender must escape from.
+
+**Time:** 2 minutes each level, 6 minutes total
+
+#### Level 1: No Hooks
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip, no hooks  
+**Defending Player Win:** Escape chest to back connection
+
+#### Level 2: Both Hooks
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip and both hooks in  
+**Defending Player Win:** Escape chest to back connection
+
+#### Level 3: Both Hooks with Chokes
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip, both hooks in, and can attempt chokes  
+**Defending Player Win:** Escape chest to back connection while defending choke attempts
+
+### 3.3 - [Back Control Any Attack](https://mennlo.github.io/grappling-games/md-viewer.html?file=games/pinning/back-control-any-attack.md)
+
+**Overview:** An advanced back control drill where the attacking partner can use any legal submission from back control while starting with a figure four grip.
+
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+#### Attacking Player
+**Position:** Back control with both hooks in and figure four grip on the defending player's arm  
+**Objective:** Use any legal method to achieve submission from back control  
+**Win:** Successfully finish any submission starting from back control  
+
+#### Defending Player
+**Position:** Being controlled from the back with both hooks in and figure four grip on arm  
+**Objective:** Escape back control and improve position  
+**Win:** Successfully escape back control before submission is achieved
+
+## Conclusion
+
+Finish class with Q&A and some live rolling starting from various back control positions. Focus on applying the defensive techniques learned during class, particularly the progression from early prevention to late-stage escapes. 
+
+**Key Defensive Concepts:**
+- Defenders should consistently fight to separate the attacking player's hands to break seatbelt grips
+- Focus on hand fighting as the primary defensive strategy before attempting position changes
+- Use systematic approach to escape: separate hands, address hooks, then improve position
+
+Attacking players should practice applying controlled pressure while defending players focus on the escape techniques and defensive positioning learned in the drills.

classes/back/back-defense-and-prevention.md

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+# Back Control Escape Progression
+
+## Overview
+A progressive drill with three increasing levels of back control difficulty that the defender must escape from, building defensive skills systematically from basic to advanced positions.
+
+## Details
+**Time:** 2 minutes each level, 6 minutes total
+
+### Level 1: No Hooks
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip, no hooks  
+**Defending Player Win:** Escape chest to back connection
+
+### Level 2: Both Hooks  
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip and both hooks in  
+**Defending Player Win:** Escape chest to back connection
+
+### Level 3: Both Hooks with Chokes
+**Attacking Player Position:** Sitting up chest to back with seatbelt grip, both hooks in, and can attempt chokes  
+**Defending Player Win:** Escape chest to back connection while defending choke attempts  
+
+## Instructions
+1. Complete each level for 2 minutes before progressing to the next
+2. Attacking player maintains the specified level of control starting from sitting up chest to back position
+3. All levels start with attacker having seatbelt grip established
+4. Defending player works to achieve the win condition for that level
+5. Reset to starting position after each successful escape
+6. If defending player cannot escape within 30 seconds, reset anyway
+7. After completing all 3 levels, switch roles
+8. Complete the full progression twice (once for each partner as defender)
+
+## Coaching Points
+### Level 1 - No Hooks:
+**For defenders:**
+- Focus on turning towards the attacking player
+- Use shoulder rolls and hip movement to create space
+- Work to break the seatbelt grip systematically
+
+**For attackers:**
+- Maintain chest-to-back pressure and seatbelt grip
+- Work to control without using hooks
+
+### Level 2 - Both Hooks:
+**For defenders:**
+- Address one hook at a time while maintaining seatbelt defense
+- Use bridges and hip escapes to create space
+- Focus on removing hooks before attempting to turn
+
+**For attackers:**
+- Maintain both hooks and seatbelt grip throughout
+- Use hooks to control defender's hip movement
+
+### Level 3 - Both Hooks with Chokes:
+**For defenders:**
+- Prioritize choke defense while working escape techniques
+- Keep chin down and hands fighting choke attempts
+- Stay calm and work systematically despite submission pressure
+
+**For attackers:**
+- Attempt realistic choke setups while maintaining control
+- Focus on proper choke mechanics rather than forcing submissions
+- Allow escapes when properly executed by defender

games/pinning/back-control-escape-progression.md

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+# Turtle Defense and Hip Control
+
+## Overview
+A turtle position drill where the defending player works to prevent hip control and maintain defensive posture while the attacking player tries to establish dominance and break down the turtle position.
+
+## Details
+**Time:** 3 minutes, 2 partners or 6 minutes total - switching back and forth
+
+### Attacking Player
+**Position:** Behind your partner who is in turtle position  
+**Objective:** Establish hip control and work to break down the turtle position  
+**Win:** Get both hooks in with seatbelt grip, or break down turtle to hip and establish chest-to-back contact with seatbelt grip  
+
+### Defending Player
+**Position:** In turtle position with your partner behind you  
+**Objective:** Prevent hip control and improve your position  
+**Win:** Successfully turn to guard or stand up while preventing hip control  
+
+## Instructions
+1. Defending player starts in turtle position (hands and knees)
+2. Attacking player starts behind the turtle with hands on the defender's back
+3. Attacking player works to establish hip control by getting their chest over the defender's hips
+4. Defending player maintains turtle structure and works to prevent hip control
+5. Defending player can win by turning to guard or standing up
+6. Attacking player wins by getting both hooks in with seatbelt grip, or by breaking down the turtle to hip and establishing chest-to-back contact with seatbelt grip
+7. Reset after each win condition is met
+8. Switch roles after time expires
+
+## Coaching Points
+For the attacking player:
+- Keep your chest low and over your partner's hips
+- Use your weight to apply downward pressure
+- Control the defender's far hip to prevent turning
+- Work to establish hooks when the opportunity arises
+- Focus on breaking down the turtle to get to the hip position
+- Once on the hip, work to establish chest-to-back contact with seatbelt grip
+- Be patient and maintain pressure rather than rushing
+- Use your legs to control the defender's movement
+- Keep your head position low to prevent the defender from standing
+
+For the defending player:
+- Maintain a strong turtle base with hands and knees
+- Keep your elbows tight to your body
+- Use your head to create space and prevent chest-to-hip contact
+- Look for opportunities to turn towards the attacking player
+- Keep moving to prevent the attacker from settling
+- Use hip movement to create angles for escape
+- Focus on getting your knees under your hips if flattened
+- Work to establish frames if the attacker gets too close