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ConradCHESS .. series 2 .. logic .. IM Conrad Goodman

series 2
what number comes next in this series:
28, 38, 49, 62, __?
( is your answer: 70, 73, 78, 79 or something else? )

Congratulations to these solvers:
FOUR solutions found by LW Luk.
THREE solutions found by Albert Frank.
TWO solutions found by Joshua Green.
ONE solution found by Carlos Cunha, Clara Ferrando, Chris Magson,
Helen Moawad, Lauren Ripley Matthew Robinson,
Steve Steppe and Luc Vingerhoets.

submit/receive solution by e-mail .. return to main chess menu.