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b1_
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Proof that $1+2+3+4+\cdots+n = \frac{n\times(n+1)}2$
Aug 12, 2010
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What is the most effective way of reducing blunders?
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Openings - e4 vs d4
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How can I make chess interesting and fun for beginners and doubters?
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Who is/was the lowest ranked World Chess Champion?
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What are all the different uses of the [square brackets] in Ruby?