Engines and grandmasters couldn't solve this puzzle, then came Mikhail Tal


If engines and gms couldn’t solve it then how did they come up with it in the first place
The position was reached in In April 1987's super-GM tournament in Brussels.
Reda the article for more information: "https://en.chessbase.com/post/solution-to-a-truly-remarkable-study"
No, this is a composed endgame study, not a game position. If you don't know what's an endgame study, check this Wikipedia page about it. As explained in the Chessbase article you linked, the study was created by Gijs van Breukelen. Here's a quote from the article:
The leading endgame expert, John Roycroft, wrote in the endgame magazine EG vol. 122:
The composer of this fine study is the Dutch composer Gijs van Breukelen, who demonstrated it as an example of his own work at a meeting of ARVES held in 1992 in Delft. The composer said at the ARVES meeting that he had composed it in the mid-1970s and shown it to several friends, but had neither sent it for publication nor entered it for a tourney. Having somehow penetrated the player circuit it circulated rapidly, acquiring journalistic colour en route through being associated either with a (totally fictitious) Ukrainian tractor-driver, or with a very specific (but equally spurious) game between leading masters. The late IGM Tal was one of the active propagators, but when asked he claimed he could not remember who had first shown it to him.

Mikhail Tal died in 1992. In 1992 (or whenever he solved it) the best engines weren't as good as the best grandmasters. It should be a piece of cake for today's engines.

Mikhail Tal died in 1992. In 1992 (or whenever he solved it) the best engines weren't as good as the best grandmasters. It should be a piece of cake for today's engines.
Actually, after queen promotion, the engine says it's -14 after Ne7+, but, after this move, it says it's mate in 10 for white...

Sad to report, but Gijs van Breukelen, the Dutch composer of this famous study, passed away in December 2022. This page on the endgame study site ARVES gives more details about him.
https://www.arves.org/arves/index.php/en/halloffame/333-van-breukelen-gijs