Need block explorer now. And please explain about block reward 10 and 1, today i found some blocks but reward only 1

EDIT : Block over 10000
int64_t nSubsidy = 1 * COIN;

    if(nHeight <= 10000)
    {
   nSubsidy = 100 * COIN;
    }
    else
    {
   nSubsidy = 1 * COIN;
    }