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STAGE 2 BANKROLL MATRIX · GRAND MARTINGALE · 300U / 1-SHOE
Grand Martingale (2x+1) — 300-Unit Bankroll & 1-Shoe (72-Hand) Risk-of-Ruin Matrix
For a 300-unit roll spanning 72 hands (1 shoes), Grand Martingale (2x+1) (1-3-7-15-31-63-127) tabulates a bankroll-constrained footprint under matrix M146-0, where the 40-unit table roof and -150u/+75u barriers yield 7.21% ruin versus 43.65% upside completion. 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)
- 7.21%
- Target Hit (+75u Cap)
- 43.65%
- 72-Hand Expected Hold
- 7.84u
- Table Max (6-Step Depth)
- 40u