Shares are actions that CKPOOL takes for quality and sends them???
A share is a valid hash that your miner finds. Shares have a "difficulty" - if your share's difficulty is higher than the network difficulty, you win and find a block. Think about difficulty as the number of shares your miner will have to generate before finding a block. Today's difficulty is 28,225,928,151,211 - statistically, if you generate that amount of shares, you'll be likely to find a block. (You can also find a block with only one share, but it's very unlikely.)
If I understand it, when in SHARES the same number or more than the current difficulty appears, I would have 1 chance of finding a block, is that correct?
And the SHARES monero increases with each valid action of the miners, right?