Let's cuke some chess...

chess.feature

Feature: Validate moves
  Scenario: Moving the knight illegally
    Given the following board:
      | | | | | | | | |8|
      | | | | | | | | |7|
      | | | | | | | | |6|
      | | | | | | | | |5|
      | | | |♞| | | | |4|
      | | | | | | | | |3|
      |♙| | | | | | | |2|
      | | | | | | | | |1|
      |a|b|c|d|e|f|g|h| |
    When I attempt d4-d5
    Then I should be shown "Illegal move"

chess_steps.rb

Given(/the following board:/) do |board|
  # Create a board, but shave off the sidelines first
  @board = Board.new(board[0..-2].transpose[0..-2].transpose)
end