From this position I made the error that was played in the game. The game was Iordachescu -- Svetushkin, Chisnau 2009. The combination appears in the Combinations section of Informant 106. The game ended in a draw, but Iordachescu offers an alternate line that leads to decisive advantage for White.
Scholastic players and parents: The label "Problem of the Week" links to posts that contain my "lesson of the week." These blog posts serve to reinforce what is presented in my after school and in-school chess clubs.
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