text: 
  
  
  export const rook = (side) => {
      const name = side + '-' + 'rook'
  
      const deltas = [
          { col: -1, row: 0 }, 
          { col: 0, row: 1 }, 
          { col: 0, row: -1 },                         
          { col: 1, row: 0 }, 
      ]
  
      const iterative = true
  
      let fen = ''
  
      if(side === 'black') {
          fen = 'r'
      }
  
      if(side === 'white') {
          fen = 'R'
      }
      
      return { name, fen, deltas, iterative, side }
  }
  