function solve () {
  let table = document.querySelector('table')
  let message = document.querySelector('#check p')

  let [quickCheck, clear] = document.querySelectorAll('button')

  quickCheck.addEventListener('click', validateSudoku)
  clear.addEventListener('click', clearData)

  function validateSudoku () {
    let rows = Array.from(document.querySelectorAll('tbody tr')).map(x =>
      Array.from(
        new Set(Array.from(x.querySelectorAll('input')).map(y => +y.value))
      )
    )

    let cols = [
      Array.from(new Set([rows[0][0], rows[1][0], rows[2][0]])),
      Array.from(new Set([rows[0][1], rows[1][1], rows[2][1]])),
      Array.from(new Set([rows[0][2], rows[1][2], rows[2][2]]))
    ]

    if (rows.every(x => x.length === 3) && cols.every(x => x.length === 3)) {
      table.style.border = '2px solid green'
      message.textContent = 'You solve it! Congratulations!'
      message.style.color = 'green'
    } else {
      table.style.border = '2px solid red'
      message.textContent = 'NOP! You are not done yet...'
      message.style.color = 'red'
    }
  }

  function clearData () {
    Array.from(document.querySelectorAll('input')).forEach(d => (d.value = ''))
    table.style.border = 'none'
    message.textContent = ''
  }
}