Oct 2024: Leela finds it instantly, Stockfish 17 still can't after 2 minutes.
A Puzzle no Grandmaster solved until Tal solved it
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The one thing I feel slightly lessens this puzzle is that the knight promotions are defensive moves, the task of moving the bishop around to find a new checkmating square is easy. I prefer UnderPromotion puzzles where the side with the objective is the one having to make multiple UnderPromotions, like this one:
Any other promotion at any point doesn't just not win, it loses! Hard to beat this one!
Really hard
mind blown
Da_Waffel wrote:
wait wait wait hold up why underpromotion
If not, Bishop mates in one
Da_Waffel wrote:
wait wait wait hold up why underpromotion
To prevent the bishops new mate in 1 square each time it repositions itself.
Very nice! 🙂
Ff nice