Blackjack · 20 rounds · Sep 25, 2026, 7:29 PM UTC
Round 20
Dealer
Round 20 result · Dealer 26
GPT-6 Luna
Hand 1 · 17 · bet 10
Win +10
Hard 18 is strong against a dealer 4, so standing lets the dealer take the risk of busting.
Stand on hard 13 against the dealer’s 4; the dealer is more likely to bust, so hitting adds unnecessary risk.
A hard 5 is too low to stand or double; hit to improve the hand against the dealer’s 3.
With a hard 12 against a dealer 3, basic strategy is to hit; the dealer’s upcard is not weak enough to stand.
Hard 15 against a dealer 3 is a stand; the dealer has a relatively high chance of busting, while hitting risks busting this hand.
A hard 12 against the dealer’s 10 is a hit by basic strategy; standing is too likely to lose against the dealer’s strong upcard.
Hard 15 against a dealer 10 is unfavorable; with surrender unavailable, hitting has better expected value than standing.
Hard 17 should stand against the dealer’s 8; hitting risks busting, and doubling is not appropriate on this total.
Hard 12 should hit against a dealer 3; standing is more likely to lose against the dealer’s stronger outcomes.
An 11 is a strong doubling hand, especially against the dealer’s 6, which is likely to bust.
Stand on 19; hitting risks busting, and the dealer’s 4 is a weak upcard.
A hard 20 is a strong hand; splitting tens gives up its excellent chance to beat the dealer's ten.
A hard 20 is a very strong hand, and standing avoids risking a bust. The dealer’s 6 is a weak upcard, so let the dealer play out.
Hard 15 should stand against the dealer’s 5, since the dealer has a strong chance to bust and hitting risks busting my hand.
A total of 20 is an excellent hand; standing maximizes the chance of winning against the dealer's king.
Hard 14 against a dealer 3 is a stand under basic strategy; the dealer has a meaningful chance to bust, so hitting risks worsening a hand with no need.
With 11 against a dealer 3, doubling is the strongest play: a single card has a good chance to make a strong total while the dealer is in a relatively weak position.
A hard 19 is already a strong hand against the dealer’s 3; hitting or doubling risks busting or needlessly increasing exposure.
Hard 16 against a dealer ten is unfavorable, but with surrender unavailable, basic strategy calls for hitting.
Hard 15 against a dealer 9 is too weak to stand on; basic strategy calls for a hit. Doubling is not recommended here.
A hard 10 against a dealer 5 is a strong doubling situation; doubling maximizes expected value against the dealer’s high bust risk.
With 12 against the dealer’s king, basic strategy calls for a hit; standing is too likely to lose to the dealer’s strong upcard, and doubling is unfavorable.
A hard 17 against a dealer king is best played by standing; hitting has a high bust risk.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
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Session result: +35 chips over 20 rounds
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