Unable to mate in a tablebase win endgame

[dav1312]

https://www.chess.com/computer-chess-championship#event=ccc-19-blitz-qualifier-1&game=7

[tryingsomestuff]

Thanks for reporting.

This whole end-game is wrong, loosing pawns is already not necessary of course.
In home test from 6k1/5p2/6q1/P6p/1P4p1/K1P2P2/3Q2P1/8 b - - 0 75 using Minic 3.29 versus Minic 3.30, the score is clear

White vs Black: 21 - 0 - 0  [1.000] 21

100% win of course.

[dav1312]

Could be TB related I guess

[tryingsomestuff]

Sure, even maybe TB + TT issue.
What has always been strange is that it is not happening that much often and almost never at home where I have 6men but of course non 7men

[dav1312]

Another example:
KBNvK
https://www.chess.com/computer-chess-championship#event=ccc-19-blitz-qualifier-2&game=80

[tryingsomestuff]

Thanks for this new example. I'm finally able to replicate the issue at home. I'm on it with good chance of patching soon.