oh my god, how does it happen? how I sent it? it was accident. why minigo was solved before chess? go on 5x5 was solved in 2002 and on 5x6 was solved in 2009. 5x5 chess was solved in 2013. I do not the reasons that caused it, if you know share
if GO is harden than chess as it is claimed to be, why miniGO was solved before miniGo?

For humans, there is a difference between playing well and solving. For computers, not so much.
As a maths problem, go is harder. As a competitive game, they seem to be the same.

5x5 go vs 5x5 chess. Maybe for these sizes chess is harder to brute force due to how the games end. The more the board fills up in go, the easier it is to evaluate. The endgame in chess can last for a very long time.

5x5 go vs 5x5 chess. Maybe for these sizes chess is harder to brute force due to how the games end. The more the board fills up in go, the easier it is to evaluate. The endgame in chess can last for a very long time.
GO has far more numbers of possible positions but more numbers mean more difficult? if so, Go on 5x6 board must have more possibilities than a chess on 5x5 board. Minigo was solved before minichess, I do not know about their number of legal games but minigo was solved in 2002 and 5x6 go was solved in 2009, minichess was solved in 2013.
UPDATE: The mini chess solver claimant says "This game [minichess] has roughly 9x10^{18} legal positions." Source: https://arxiv.org/abs/1307.7118 (Link) or to cite https://arxiv.org/abs/1307.7118 as is recommended.
According to wikipeida, GO on 5x5 has 4.1×1011 legal positions (maximally). In this regard, mini chess has far many possibilities and it is not anormal to be solved later. But I think it indicates one thing:
even though they have equal nummber of spots (25 squares vs 25 intersections) GO has far more pieces and in spite of this chess has far more possibilities. It may indicate due to the way they are played chess is harder than go and it requires more intelligence, more strategy, more work.