In this video I am testing Komodo 10.4 chess engine with a very complex chess puzzle composed by English chess composer Harold Lommer. As White needs to develop a long strategical idea in order to win, the engine fails to calculate up to the end, the evaluation goes wrong and can’t solve it! A very unique chess puzzle where underpromotion to a knight is the answer!
__________________
Harold Lommer, Szachy,1965
White is winning
This position in Forsyth-Edwards Notation (FEN) is : 4r3/p1p1pPp1/P1P1P1P1/5K2/3p2P1/7p/3P1ppr/3R1nkq w – – 0 1

Video Icon Attribution: https://commons.wikimedia.org/wiki/File:Mr_Pipo_thought_balloon_brain.svg