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JBKahn/gist:ac1a09ae90d50c82ba3b

Created May 1, 2014 18:14
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gistfile1.coffee
isFlipping: (positions) =>
if positions.length < 4
return false
invalidA = ['above', 'below', 'above', 'below']
invalidB = ['below', 'above', 'below', 'above']
lastThree = _.last(positions, 4)
return _.isEqual(lastThree, invalidA) or _.isEqual(lastThree, invalidB)
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