How to alternate clicking checkboxes?

Question

Vue.js

Good day, there is a code example ( jsfiddle.net/v8oa5d69/4 )
How in this example to make it possible to alternately click checkboxes, say if you tick one checkbox, then they will be removed in the other two) Thanks in advance)

Answer 1

watch: {
  checked(val) {
    if (val.length > 1) {
      this.checked = val.slice(-1);
    }
  },
},

jsfiddle.net/2gn6z97s
One question - what the hell? You can replace the checkboxes with radio buttons, and add another one that will indicate the absence of a choice.