Practice Lab · private skill drills
Blackjack Ledger
Build the reflex
Count cleanly under pressure.
Classify 20 cards using Hi-Lo. Your accuracy, time, and personal best stay on this device.
Drill 01 · Hi-Lo Sprint
One card. One decision.
Tap +1 for 2–6, 0 for 7–9, or −1 for 10–Ace. The clock starts with the first card.
How does this card change the running count?
Sprint complete
Nice work.
Drill 02 · True Count Snap
The division is the hard part.
Tagging cards is the easy half. Ten rounds of running count over decks remaining, to the nearest half — the number every bet and every deviation actually runs on.
Round to the nearest half.
Drill complete
Nice work.
Drill 03 · Deck Estimate
Trust your eye, then check it.
Ten discard trays. Say how many decks are still in the shoe. Everything downstream divides by this number, so an eye half a deck out puts every decision half a point out with it.
Cards already played — the discard tray
Shoe holds 6 decks. Everything in the tray is out of it.
So how many decks are still in the shoe?
Drill complete
Nice work.
Drill 04 · Index Recall
The count is in. Now play.
Ten hands, each with a true count attached. Half sit above the index and half below it, so always deviating scores fifty. Answers come from the same tables the app plays from, at your table rules.
What is the correct play?
Drill complete
Nice work.
Next drills
Training roadmap
Bet Spread
Size the next bet from the count, without reaching for the panel.
Full Shoe
Count a whole shoe end to end, at dealer speed, without a reset.
Recent form
Last 12 sprints
Where you leak
Accuracy by card
Weakest ranks first. Drill these until the gap closes.
Your data
Stored on this device
Nothing here leaves your browser. Clearing site data — or the button below — resets every figure on this page.
Blackjack Ledger Pro
Unlimited drills, unlimited shoes, every count deviation live, exact side-bet expected value, and the implied stake in the bet-sizing panel.
Founding price for the first 50 members, and it stays locked for as long as the subscription runs. Free keeps half a shoe and one drill a day.Your progress
Private by default
Drill history is stored only in this browser. Clearing site data resets it.
Validation
Measure behavior first
Practice milestones and plan interest use separate routes for anonymized aggregate measurement.