Extreme blunder in defence in B23 of match240310-_WBridge5_v_ben0308p5dd.pbn

[ThePokerDude]

Ben can win the trick with Qs but wins with As instead

[ThePokerDude]

[Event ""]
[Site ""]
[Date ""]
[Board "23"]
[Dealer "W"]
[Vulnerable "All"]
[Deal "W:J83.KQJ8.9854.T4 K754.A94.KJ7.A95 AQ62.76.A3.KQ872 T9.T532.QT62.J63"]
[Scoring ""]
[BCFlags "1f"]
[Generator "BridgeComposer Version 5.104.1"]
{PAR of the deal: 3S = played by east: 140 points}
{Feasability: 4 6 6 4 6 8 7 7 9 7 4 6 5 4 6 8 7 7 9 7
[South "WBridge5"]
[West "ben0308p5dd"]
[North "WBridge5"]
[East "ben0308p5dd"]
[Declarer "N"]
[Contract "1NTX"]
[Result "8"]
{PAR of the deal: 3S = played by east: 140 points}
{Feasability: 4 6 6 4 6 8 7 7 9 7 4 6 5 4 6 8 7 7 9 7}
[Auction "W"]
Pass 1NT X Pass
Pass Pass
[Play "E"]
CK c3 C4 ca
DA d2 D5 dk
CQ c6 CT c5
C8 cj H8 c9
D3 d6 D9 dj
S2 dt D8 d7
S6 dq D4 s5
SA st S8 s7
C7 h2 S3 h9
C2 ht SJ h4
SQ s9 HK sk
H7 h3 HQ ha
H6 h5 HJ s4

[ThorvaldAagaard]

The BEN reasoning here is

Now we have only 20 visible samples, but it seems partner has SK most of the times.

We have 2 tricks, and 2 in clubs, so winning SQ, we will probably have to give declarer 2 Heart-tricks at the end. By using SA we might set up a squeeze against declarer.

So should we trust the neural network or go for the 7th trick?

[ThorvaldAagaard]

The key to this deal is to introduce signaling, so West at the third club can deny interest in spades.