Heads-up Texas Hold'em poker vs an adaptive AI. Pot-limit rules, escalating blinds. Bust the AI to win.
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Showdown is a heads-up Texas Hold’em poker game where you face a single adaptive AI opponent. Each player starts with 500 chips. The goal is simple: bust the AI by reducing its chip stack to zero.
Each hand begins with both players posting blinds. The dealer posts the Small Blind; the other player posts the Big Blind. Blinds escalate every 10 hands to keep the pressure rising. You’re dealt two private hole cards, and five community cards are revealed in three stages: the Flop (three cards), the Turn (one card), and the River (one card). Use any combination of your hole cards and the community cards to build the best possible five-card hand.
Betting uses pot-limit rules — the maximum raise equals the current pot size. You can Check (when no bet exists), Call the opponent’s bet, Raise up to the pot size, or Fold to surrender the hand. You can also go All-In at any time. The AI opponent uses a realistic hand-strength evaluator: it bluffs with weak hands roughly 25% of the time, semi-bluffs on flush and straight draws, and tightens up if you fold too often.
Hand rankings follow standard poker from High Card up to Royal Flush. After the River, if neither player has folded, cards are revealed and the best hand wins the pot. Play continues hand after hand, with the dealer button alternating each hand, until one player is left with no chips.
In heads-up poker, position is everything. When you are the dealer (Small Blind), you act last on every street after the flop, giving you a significant information advantage. Use this position aggressively by betting and raising with a wider range of hands. When you are out of position (Big Blind), play tighter and favor checking to control the pot size.
The AI opponent’s bluff frequency is calibrated against your folding habits. If you fold too often, the AI will increase its bluffing. Counter this by calling with medium-strength hands on dry boards. However, when the board is coordinated (flush or straight draws possible), the AI is more likely to have a real hand, so your folds carry less risk.
Pay close attention to blind levels. As the blinds rise, the effective stack-to-blind ratio shrinks. When either player has fewer than ten big blinds, pushing all-in pre-flop with any pair or ace-high is mathematically correct. Many sessions are decided at the transition from Level 2 to Level 3 blinds, where both players face meaningful pressure from the cost of posting.
The hand evaluator runs on the same logic for both you and the AI. There is no hidden advantage — every hand is evaluated using all possible five-card combinations drawn from the seven available cards. Understanding pot odds matters: if the pot is 100 and it costs 25 to call, you need roughly 25% equity to break even. A flush draw (nine outs) gives you about 36% chance of completing on the next card, making a call profitable in this scenario.
Pot-limit means the maximum raise equals the current pot size. If the pot holds 100 chips, you can raise by up to 100 chips. The minimum raise equals the size of the previous raise. This is different from no-limit (where any amount is allowed) or fixed-limit (where bets are fixed increments).
The AI evaluates its hand strength and available outs on each street. When it has a weak hand that missed the board, it bluffs approximately 25% of the time by betting 50% of the pot. Its bluff frequency gradually decreases if you fold too often — the AI tracks your tendencies and adjusts. On drawing hands (flush or straight draws), the AI semi-bluffs with a smaller bet on the flop and checks if the draw misses on the turn.
Blinds rise every 10 hands regardless of who holds the chip lead. Level 1 (hands 0–9): 5/10. Level 2 (hands 10–19): 10/20. Level 3 (hands 20–29): 15/30. Level 4 (hands 30+): 25/50. Higher blinds force action and prevent either player from stalling with a chip advantage.
You win the session when the AI's chip stack reaches zero. The AI wins when your chip stack reaches zero. There is no time limit — the session continues hand after hand until one player is busted. Your score (used for the leaderboard) is the number of individual hands you won during the session.
Yes. Click the All-In button at any point during your betting turn to commit all your chips to the pot. If the AI has fewer chips, only the matching amount is contested. Going all-in before the flop is a standard heads-up poker tactic, especially useful when the blind-to-stack ratio is low (under 5 big blinds).
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