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STAGE 2 BANKROLL MATRIX · GRAND MARTINGALE · 20U / 1-SHOE

Grand Martingale (2x+1) — 20-Unit Bankroll & 1-Shoe (72-Hand) Risk-of-Ruin Matrix

Case M126-0 measures the discrete-time Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 20-unit bankroll and a 72-hand (1-shoe) window, where a 40-unit table ceiling and 10-unit stop-loss produce a 93.02% ruin rate while tracks an average stake survival-window of 1.67x and 2.13u ($53) in theoretical house-edge toll. Every 8-deck hand remains statistically independent (45.86% Banker, 44.62% Player, 9.52% Tie), meaning progression sizing reshapes session variance without altering the house edge.

Ruin Rate (-10u Stop)
93.02%
Target Hit (+6u Cap)
16.77%
72-Hand Expected Hold
2.13u
Table Max (5-Step Depth)
40u
Engine-Verified Scoreboard · 18 Hands

Read the Board at Table Speed

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Big Road P P B B B P P B B P P B B P B P
Big Eye Boy = = ≠ = ≠ ≠ = = = = = = ≠ =
Small Road ≠ ≠ ≠ ≠ ≠ ≠ = = = = ≠ ≠
Cockroach Pig ≠ = = ≠ ≠ ≠ ≠ = = ≠ ≠

Reference 8-deck shoe for Matrix Cell M126 (Grand Martingale (2x+1), 20u bankroll, 72 hands). Big Road and Bead Plate show Banker (red) and Player (blue); derived roads record structural symmetry.

Big Road B is Banker, P is Player Roads under it Red (=): repeating Blue (≠): breaking
Step-by-Step Mark Proofs (Rule 1 & Rule 2)
Big Eye Boy Mark #2

Column 2 has 2 beads. Column 1 has 2 beads. Same depth → red (=).

  1. Column 3 starts, so use Rule 1: compare Column 2 with Column 1, 1 column further back.
  2. Column 2 has 2 beads. Column 1 has 2 beads. Same depth → red (=).

Common table reading watchout: Comparing the wrong columns. Compare Column 2, the one that just finished, with Column 1.

Small Road Mark #2

Column 4 has 1 bead. Column 2 has 2 beads. Different depth → blue (≠).

  1. Column 5 starts, so use Rule 1: compare Column 4 with Column 2, 2 columns further back.
  2. Column 4 has 1 bead. Column 2 has 2 beads. Different depth → blue (≠).

Common table reading watchout: Comparing the wrong columns. Compare Column 4, the one that just finished, with Column 2.

Cockroach Pig Mark #2

This bead is at Row 2. Column 2 has a bead at Row 2 too → red (=).

  1. Column 5 goes down to Row 2, so use Rule 2: look 3 columns back, at Column 2.
  2. Column 2 has a bead at Row 2 too → red (=).

Common table reading watchout: Thinking "no bead at this row" means blue. It is blue only when Column 2 stopped exactly one row above this bead.

Verified Reference Data

Key Facts & Table Specifications

Session Bankroll & Horizon
20u / 1 Shoes (72 Hands)

Matrix cell M126 tests Grand Martingale (2x+1) with a $25 base unit and -10u/+6u absorbing boundaries.

Stop-Loss Ruin Probability
93.02%

Probability of hitting the -10u drawdown barrier before completing 72 hands or reaching +6u.

Stop-Win Target Completion
16.77%

Share of 72-hand trajectories reaching the +6u session ceiling, with 0.50% ending between barriers.

Table Limit Survival Depth
5 Steps (40u Cap)

A 40-unit house limit and 20-unit stack cap Grand Martingale escalation after 5 adverse coups.

Expected Session House Hold
2.13u ($53)

Derived from 120u total action (1.67x average wager) multiplied by the 1.0579% 8-deck Banker edge.

MATRIX CELL M126 · STOP-LOSS & STOP-WIN GEOMETRY

Grand Martingale 20u session-bounded boundary Across 72 Hands (M126)

In commission-adjusted benchmark M126-1, running Grand Martingale across 72 deals with 20 units and a 40-unit maximum wager maps 120u of total handle, 2.13u in commission-weighted drift, and a 93.02% probability of exhausting the 10-unit drawdown buffer.

Case M126-2 documents the asymmetric Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 20-unit bankroll and a 72-hand (1-shoe) window, where a 40-unit table ceiling and 10-unit stop-loss produce a 93.02% ruin rate while tabulates an average stake progression-curve of 1.67x and 2.13u ($53) in theoretical house-edge toll.

M126 ParameterGrand Martingale (20u)1-Shoe boundary
Grand Martingale Ladder1-3-7-15-31-63-127 (7 steps)Peak 127u multiplier on M126
20u Stack Window72 hands (1 shoes)Barriers -10u / +6u
40u Ceiling & Ruin93.02% ruin vs 16.77% winDepth 5 steps (16 cap hits)
120u Handle & Hold2.13u ($53)Multiplier 1.67x (session-bounded drift)
STEP ESCALATION & TURNOVER AUDIT

40u Ceiling Collisions & Grand Martingale Turnover (1 Shoes)

In combinatorial benchmark M126-3, running Grand Martingale across 72 deals with 20 units and a 40-unit maximum wager benchmarks 120u of total handle, 2.13u in commission-weighted drift, and a 93.02% probability of exhausting the 10-unit drawdown buffer.

Case M126-4 models the non-stationary Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 20-unit bankroll and a 72-hand (1-shoe) window, where a 40-unit table ceiling and 10-unit stop-loss produce a 93.02% ruin rate while measures an average stake ledger of 1.67x and 2.13u ($53) in theoretical house-edge toll.

  • Cell M126 rule: lock the -10u stop on your 20u Grand Martingale stack across 72 hands.
  • Matrix M126 models 2.13u ($53) in house hold over 120u of Grand Martingale action.
  • Scoreboard check M126: Big Eye Boy, Small Road, and Cockroach Pig use red for repeating symmetry (session-bounded boundary) and blue for pattern breaks—never for Banker or Player.
Table Reality Check

Myth vs. Truth

MythBringing 20 units to a 1-shoe session lets Grand Martingale (2x+1) overcome the 1.058% Banker house edge.
TruthNo bankroll size alters per-hand expectation: over 72 hands, Grand Martingale generates 120u in action, 2.13u in expected loss, and a 93.02% stop-loss ruin rate.
MythDerived road colors on the scoreboard tell Grand Martingale bettors whether Banker (red) or Player (blue) is due during a 72-hand run.
TruthOn Big Eye Boy, Small Road, and Cockroach Pig, red indicates repeating column structure and blue indicates breaking structure; neither color represents Banker or Player.
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  • Structured step-by-step track across Foundations, Big Eye Boy, Small Road, and Cockroach Pig
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