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STAGE 2 BANKROLL MATRIX · GRAND MARTINGALE · 300U / 3-SHOE

Grand Martingale (2x+1) — 300-Unit Bankroll & 3-Shoe (216-Hand) Risk-of-Ruin Matrix

Case M147-0 computes the eight-deck Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 300-unit bankroll and a 216-hand (3-shoe) window, where a 60-unit table ceiling and 150-unit stop-loss produce a 19.79% ruin rate while documents an average stake stake-velocity of 6.13x and 23.53u ($1177) 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 (-150u Stop)
19.79%
Target Hit (+75u Cap)
40.54%
216-Hand Expected Hold
23.53u
Table Max (6-Step Depth)
60u
Engine-Verified Scoreboard · 18 Hands

Read the Board at Table Speed

Open this shoe in /calculator
Big Road B B P P B P B P B B P P B B P B
Big Eye Boy = = ≠ = = = ≠ ≠ = = ≠ = = =
Small Road ≠ ≠ = = ≠ ≠ ≠ ≠ ≠ ≠ = =
Cockroach Pig ≠ ≠ = ≠ ≠ ≠ ≠ = ≠ ≠ =

Reference 8-deck shoe for Matrix Cell M147 (Grand Martingale (2x+1), 300u bankroll, 216 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

Column 5 has 1 bead. Column 2 has 2 beads. Different depth → blue (≠).

  1. Column 6 starts, so use Rule 1: compare Column 5 with Column 2, 3 columns further back.
  2. Column 5 has 1 bead. Column 2 has 2 beads. Different depth → blue (≠).

Common table reading watchout: Comparing the wrong columns. Compare Column 5, the one that just finished, with Column 2.

Verified Reference Data

Key Facts & Table Specifications

Session Bankroll & Horizon
300u / 3 Shoes (216 Hands)

Matrix cell M147 tests Grand Martingale (2x+1) with a $50 base unit and -150u/+75u absorbing boundaries.

Stop-Loss Ruin Probability
19.79%

Probability of hitting the -150u drawdown barrier before completing 216 hands or reaching +75u.

Stop-Win Target Completion
40.54%

Share of 216-hand trajectories reaching the +75u session ceiling, with 39.68% ending between barriers.

Table Limit Survival Depth
6 Steps (60u Cap)

A 60-unit house limit and 300-unit stack cap Grand Martingale escalation after 6 adverse coups.

Expected Session House Hold
23.53u ($1177)

Derived from 1324u total action (6.13x average wager) multiplied by the 1.0579% 8-deck Banker edge.

MATRIX CELL M147 · STOP-LOSS & STOP-WIN GEOMETRY

Grand Martingale 300u finite-shoe profile Across 216 Hands (M147)

In absorbing-barrier benchmark M147-1, running Grand Martingale across 216 deals with 300 units and a 60-unit maximum wager inspects 1324u of total handle, 23.53u in commission-weighted drift, and a 19.79% probability of exhausting the 150-unit drawdown buffer.

Case M147-2 verifies the bankroll-constrained Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 300-unit bankroll and a 216-hand (3-shoe) window, where a 60-unit table ceiling and 150-unit stop-loss produce a 19.79% ruin rate while profiles an average stake drawdown-slope of 6.13x and 23.53u ($1177) in theoretical house-edge toll.

M147 ParameterGrand Martingale (300u)3-Shoe profile
Grand Martingale Ladder1-3-7-15-31-63-127 (7 steps)Peak 127u multiplier on M147
300u Stack Window216 hands (3 shoes)Barriers -150u / +75u
60u Ceiling & Ruin19.79% ruin vs 40.54% winDepth 6 steps (32 cap hits)
1324u Handle & Hold23.53u ($1177)Multiplier 6.13x (finite-shoe drift)
STEP ESCALATION & TURNOVER AUDIT

60u Ceiling Collisions & Grand Martingale Turnover (3 Shoes)

In capital-bounded benchmark M147-3, running Grand Martingale across 216 deals with 300 units and a 60-unit maximum wager tabulates 1324u of total handle, 23.53u in commission-weighted drift, and a 19.79% probability of exhausting the 150-unit drawdown buffer.

Case M147-4 quantifies the discrete-time Grand Martingale (2x+1) (1-3-7-15-31-63-127) across a 300-unit bankroll and a 216-hand (3-shoe) window, where a 60-unit table ceiling and 150-unit stop-loss produce a 19.79% ruin rate while benchmarks an average stake volatility-band of 6.13x and 23.53u ($1177) in theoretical house-edge toll.

  • Cell M147 rule: lock the -150u stop on your 300u Grand Martingale stack across 216 hands.
  • Matrix M147 charts 23.53u ($1177) in house hold over 1324u of Grand Martingale action.
  • Scoreboard check M147: Big Eye Boy, Small Road, and Cockroach Pig use red for repeating symmetry (finite-shoe profile) and blue for pattern breaks—never for Banker or Player.
Table Reality Check

Myth vs. Truth

MythBringing 300 units to a 3-shoe session lets Grand Martingale (2x+1) overcome the 1.058% Banker house edge.
TruthNo bankroll size alters per-hand expectation: over 216 hands, Grand Martingale generates 1324u in action, 23.53u in expected loss, and a 19.79% stop-loss ruin rate.
MythDerived road colors on the scoreboard tell Grand Martingale bettors whether Banker (red) or Player (blue) is due during a 216-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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