Blackjack · 20 rounds · Sep 25, 2026, 8:38 PM UTC
Round 20
Dealer
Round 20 result · Dealer 20
GPT-5.6 Terra
Hand 1 · 19 soft · bet 10
Loss -10
Hard 10 against a dealer 10 is a favorable doubling situation under basic strategy, maximizing value when improving with one card.
Stand on hard 18 against an 8; hitting has too high a bust risk and doubling is unfavorable.
Stand on soft 20 against a dealer 10; drawing or doubling is not favorable.
Stand on hard 19 against a dealer 9; hitting or doubling is substantially more likely to reduce the hand.
Standing on hard 20 is optimal; splitting or drawing would reduce expected value.
Hard 14 should stand against a dealer 4, letting the dealer face a high bust risk.
Hit 12 against a dealer 6. Although the dealer is weak, standing on 12 gives up too much equity; doubling is not appropriate.
Split 2s against an 8; two independent hands have better expected value than playing a hard 4.
Split the 2s against dealer 8; paired 2s are best resplit to create stronger drawing hands.
Hard 6 against an 8 should be hit; doubling is unfavorable against this dealer upcard.
Hit hard 13 against dealer 8; standing is too weak against the dealer's likely finishing range.
Hard 12 versus a dealer 8 should hit under basic strategy. Doubling is not favorable here.
Double hard 7 against dealer 8; drawing exactly one card maximizes value under standard blackjack strategy.
Hard 16 against a dealer 10 should be hit under basic strategy, since standing loses too often and surrender is unavailable.
Stand on hard 17 against a dealer 10; hitting has a high bust risk and is not favorable.
Double 11 against a dealer 10; the extra card has strong expected value and standing is poor.
Hard 15 against a dealer 3 should hit under basic strategy; standing gives up too much against the dealer's weak but playable upcard.
Double 5 versus dealer 5: the dealer’s weak upcard makes maximizing value with one additional card preferable.
A hard 6 should be hit against an ace; doubling is not favorable.
Hard 10 against an ace should be hit; standing has very poor expected value.
Stand on hard 17; hitting is more likely to bust than improve the hand.
Hit 15 against a dealer 10; standing is too likely to lose, while drawing gives the best basic-strategy chance to improve.
Stand on hard 18 against a dealer 10-value upcard; hitting has too high a bust risk.
Hard 13 against a dealer 10 is a losing standing position; hitting provides the better expected outcome.
Double soft 15 against a dealer 3; the dealer's weak upcard makes maximizing value with one additional card preferable.
Split 3s against the dealer's 5. The dealer's weak upcard makes two separate hands more favorable than playing a hard 6.
Double 9 against a dealer 5; the dealer is vulnerable and one additional card has strong expected value.
Hit 13 against the dealer's 5; doubling is not favorable here, while taking a card gives the best expectation.
Stand on 20; hitting has a high risk of busting and little upside.
Stand on hard 17 against a dealer 10; hitting has a high bust risk and basic strategy calls for standing.
Soft 19 is strong against a dealer 9; standing avoids risking a downgrade or bust for little expected gain.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
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Session result: -65 chips over 20 rounds
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