Level 3: 60%
Level 4: 45%
Level 5: 32%
Level 6: 28%
Level 7: 22%
Level 8: 18%
Level 9: 15%
Level 2: 0%
Level 3: 25%
Level 4: 30%
Level 5: 36%
Level 6: 30%
Level 7: 30%
Level 8: 20%
Level 9: 10%
Level 3: 15%
Level 4: 20%
Level 5: 25%
Level 6: 30%
Level 7: 30%
Level 8: 25%
Level 9: 25%
Level 4: 5%
Level 5: 7%
Level 6: 11%
Level 7: 15%
Level 8: 20%
Level 9: 30%
Level 6: 1%
Level 7: 3%
Level 8: 7%
Level 9: 10%
According to the Chess Master rate above, champions with 5 gold will not be able to appear when the summoned beast has not reached level 6. In contrast, the rate of 1 Chess champion at level 2 is 100%, up to level 9 only 15% left.
Based on the rate of chess generals in the above rank, you will know what level to roll your champion with. And from there can better manage the money you have.