Glitch in declarer play ?

[emalka]

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Free robot tournament / MP.

Obviously GIB tried to pin ♥7 at trick 7, but why it throwed ♦ on ♥8 ??

3NT was played three times by GIB as North and GIB got two times 9 tricks where bidding and lead was different.

[rwbarton]

Obviously GIB tried to pin ♥7 at trick 7, but why it throwed ♦ on ♥8 ??

 

Why not? Once East shows out of hearts it knows it is going to lose the next three tricks to West and on one of these three tricks it is going to have to pitch a club or diamond anyways.

[emalka]

Why not? Once East shows out of hearts it knows it is going to lose the next three tricks to West and on one of these three tricks it is going to have to pitch a club or diamond anyways.

Sorry my mistake, but GIB went -2 instead of -1 by leaving a spade in dummy.