After 4+ years of competitive rummy, here are my top card counting tips. These aren't cheats โ they're legitimate observation skills that every serious player should develop.
1. Track the discard pile
This is basic but most players don't do it systematically. Keep a mental count of which suits and values have been discarded. If three 7s are in the discard pile, the fourth 7 is safe to hold (nobody can use it for a set).
2. Watch opponent pickups
When an opponent picks from the open pile instead of the closed pile, they're telling you something. They need that specific card. Note what they picked and deduce their potential sequences.
3. The "missing card" technique
If you need a card and it hasn't appeared in discards or your hand, either your opponents have it or it's in the closed pile. Track the probability: early game = likely in pile, late game = likely with opponents.
4. Count cards by suit
There are 13 cards per suit. If you can see 8+ cards of a specific suit (your hand + discards), you know the remaining 5 are distributed among opponents and the pile. This helps predict what sequences are still possible.
More advanced tips on PG7's Advanced Rummy Strategy guide.