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itzerkov
Blog
Chess
About
Contact
itzerkov
Blog
Chess
About
Contact
Ivo Zerkov 6/9/25 Ivo Zerkov 6/9/25

A geography dozen

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Ivo Zerkov 5/24/25 Ivo Zerkov 5/24/25

My favourite pawn endgame

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Ivo Zerkov 11/18/23 Ivo Zerkov 11/18/23

Dr House’s rule

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Ivo Zerkov 11/2/23 Ivo Zerkov 11/2/23

Three recursive problems

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