Card counting, explained.
Concise guides written by the team that built the trainer. No fluff, no get-rich-quick framing, no missing math. Read these and the rest of the site makes more sense.
FoundationsHow to count cards in blackjackWhy counting works, what gives the player an edge, and the four things every counter has to do at the table. Twelve minutes of reading.SystemThe Hi-Lo card counting systemThe value table, why it balances to zero, and how Hi-Lo trades off ease of use against raw playing efficiency.MathTrue count, explainedRunning count is only half the picture. Dividing by decks remaining is what turns the count into a bet-sizing signal.MoneyHow to size your bets when countingThe 1-2-4-6-8 ramp, why aggressive spreads attract heat, and how to pick a unit that the table tolerates and the bankroll can survive.
The trainer at the centre of all of this lives at stack21. Free to start, no card on file, the same chart and the same Hi-Lo tagging the guides reference.
Free to start
Read it, then play it.
Practice closes the loop on theory. Free account, no card, the trainer grades every hand against the chart and the ramp.