Anvil Table · study notes

REKO running count — reduced KO with published IRC and a flat index

REKO (Reduced KO) keeps Knock-Out’s tags and throws away most of the index table. You start at a published initial running count for the common shoe sizes, use one primary index for strategy deviations, and ramp bets off the running count. The point is to capture nearly all of KO’s expected value with a fraction of the memorisation. Anvil Table uses the published IRCs for 1, 2, 6, and 8 decks and the published REKO bet rungs; if you pick 4 decks it falls back to KO’s IRC formula and says so in the bet reason line.

Last updated 2026-08-21

Tag values

2	3	4	5	6	7	8	9	10	A
+1	+1	+1	+1	+1	+1	0	0	-1	-1

Unbalanced: bet from the running count. Do not divide by decks remaining. Initial running count: Published: 1-deck −1, 2-deck −5, 6-deck −20, 8-deck −27. Other deck counts fall back to KO’s 4 × (1 − decks).. Insurance default in Anvil Table: Running count at the KO-style pivot.

Betting correlation	0.98
Playing efficiency	0.55
Ace-neutral?	No — ace is in the main count

Why you would pick REKO over Hi-Lo

REKO is for people who already decided against true count. Versus Hi-Lo you gain simplicity of RC-only betting and lose the large published Hi-Lo index literature.

KO’s power, one index, published ramps for the shoes you actually see.

Weaknesses

Not every deck count has a published REKO ramp. Four-deck shoes in Anvil Table borrow KO’s ramp. If you want a full index set, plain KO or Hi-Lo with deviations is the next step.

Practise REKO in the trainer

Open the REKO calculator. The count strip shows these tags live. Educational use only — not for a device at a live table.

FAQ

Is REKO different from KO?

Same tags. REKO simplifies the starting count, uses a flat index instead of a large deviation table, and publishes a short bet ramp for common deck numbers.

Educational study aid only. No real money. Do not use a phone or this trainer to assist play at a live casino table. Trainer.