11 lines
392 B
Elixir
11 lines
392 B
Elixir
defmodule Chess960 do
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@pieces ~w(♔ ♕ ♘ ♘ ♗ ♗ ♖ ♖) # ~w(K Q N N B B R R)
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@regexes [~r/♗(..)*♗/, ~r/♖.*♔.*♖/] # [~r/B(..)*B/, ~r/R.*K.*R/]
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def shuffle do
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row = Enum.shuffle(@pieces) |> Enum.join
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if Enum.all?(@regexes, &Regex.match?(&1, row)), do: row, else: shuffle
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end
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end
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Enum.each(1..5, fn _ -> IO.puts Chess960.shuffle end)
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