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import scala.concurrent._
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import scala.concurrent.duration._
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import ExecutionContext.Implicits.global
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import scala.language.postfixOps
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lazy val f = Future {
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assert(legal_moves(8, Nil, (2,2)) ==
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List((3,4), (4,3), (4,1), (3,0), (1,0), (0,1), (0,3), (1,4)))
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assert(legal_moves(8, Nil, (7,7)) == List((6,5), (5,6)))
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assert(legal_moves(8, List((4,1), (1,0)), (2,2)) ==
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List((3,4), (4,3), (3,0), (0,1), (0,3), (1,4)))
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assert(legal_moves(8, List((6,6)), (7,7)) == List((6,5), (5,6)))
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assert(legal_moves(1, Nil, (0,0)) == List())
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assert(legal_moves(2, Nil, (0,0)) == List())
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assert(legal_moves(3, Nil, (0,0)) == List((1,2), (2,1)))
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}
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Await.result(f, 120 second)
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