A Combinatorial Dataset of Blackjack House Edge and Basic Strategy Across 24 Rule Sets

This paper presents an open dataset of the exact house edge and complete basic-strategy decision tables for 24 common blackjack rule sets, computed with a combinatorial, total-dependent expected-value engine. For every rule set the dataset gives the mathematically optimal action (hit, stand, double, split, surrender) for each player hand against each dealer up-card, together with the resulting house edge under 3:2 blackjack payouts. The engine reproduces the reference house edge of 0.485% for the canonical six-deck, dealer-stands-on-soft-17, double-after-split, late-surrender game, matching the value published by established blackjack references. The dataset is released so that players, researchers and tool builders can verify and reuse exact house-edge figures rather than relying on rounded or copied tables.