Hello I hope you understand my english. This subject make me some questions.

1. In practice, is that mean more the difficult is high more leading zero must have the hash to build next block ?

2. For example a 1GH/s SHA-256miners can calculate a very high difficulty ?

3. Or with a 1GH/s in solo mining if you force the difficulty to 1 when the coin is like bitcoin, is that possible ? Is that good ?

4. If I mine in a pool, who ask for less leading zero (depending the pool), is that mean sometimes a miner found an hash with more leading zero (acceptable for the coin difficulty) than this hash solve the block ?



Thanks for your help