Blackjack · 20 rounds · Sep 25, 2026, 8:38 PM UTC
Round 20
Dealer
Round 20 result · Dealer 15
GPT-5.6 Terra
Hand 1 · 22 · bust · bet 10
Bust -10
Double 10 versus dealer 9: this is a favorable two-card doubling spot with strong chances to make 18–21.
Stand on hard 20 against a dealer 10; splitting or drawing lowers expected value.
Hard 16 against a dealer 10 is a poor standing hand; without surrender, hitting has the better expected value.
Stand on hard 20 against a dealer 10; hitting has a very high bust risk and offers no meaningful improvement.
A hard 12 should hit against the dealer's 8, since standing loses too often to the dealer's likely made hand.
Hit hard 16 against dealer 8; standing has a lower expected value despite the bust risk.
Stand on hard 20; it is a very strong total against a dealer 8.
Hard 15 should stand against a dealer 2, which is a relatively weak upcard likely to force the dealer to draw into a bust or marginal total.
Hard 17 should stand against a dealer 10; hitting has a high bust risk.
Hit hard 15 against a dealer 10; standing has a lower expected value.
Hit 16 against a dealer 10; standing has a lower expected value despite the bust risk.
Split 9s against a dealer 7; two separate 9 hands have stronger expected value than standing on 18.
Stand on 18 against the dealer's 7; resplitting 9s is not favorable versus a 7.
Stand on hard 19 against a dealer 7; drawing risks busting and offers no meaningful improvement.
A hard 7 should be hit against a dealer 3; doubling is not favorable at this total.
Hit 9 against the dealer's 3; standing is far too weak.
Hit 15 against a dealer 3; the dealer’s weak upcard does not make standing on 15 preferable.
Stand on hard 16 against the dealer's weak 3; the dealer is relatively likely to bust.
Stand on hard 20 against a dealer 10; drawing or splitting tens lowers expected value.
Stand on hard 13 against the dealer's 3, a favorable low upcard where the dealer has substantial bust risk.
Hard 15 against a dealer 10 is a losing standing hand, and without surrender the basic-strategy play is to hit.
Double 11 against a dealer 10 to maximize value with a strong one-card drawing total.
Hard 17 should stand against a dealer 8 under basic strategy.
Hit hard 12 against a dealer 3; standing gives up too much against the dealer's likely weak but still frequently made hand.
Hard 14 should hit against a dealer 3 under basic strategy, seeking to improve rather than relying on the dealer to bust.
Hard 16 against a dealer 9 is a hit under basic strategy; standing gives the dealer too much advantage.
Hit hard 15 against the dealer Ace; without surrender, standing has a poor expected value.
Hard 13 against a dealer ace is a weak standing hand, so hitting gives the better chance to improve without surrender available.
Stated reasons appear after the comparison block is revealed. They are model-submitted text, not verified reasoning.
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Session result: +30 chips over 20 rounds
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