Perft give false results

[Carbecq]

Hi
I tried to do a perft test, but I found that the results are false
This is what I found for example at depth 4

a2a3: 8457
b2b3: 9347
c2c3: 9347
d2d3: 11961
e2e3: 13280
f2f3: 8457
g2g3: 9347
h2h3: 8457
a2a4: 9329
b2b4: 9332
c2c4: 9818
d2d4: 12437
e2e4: 13308
f2f4: 8929
g2g4: 9328
h2h4: 9329
b1a3: 8885
b1c3: 9757
g1f3: 9754
g1h3: 8883
Moves 197,742

The total move should be 197,281. Unless you count moves with another way ?

I like your code, its very well documented. Im learning a lot with it.
Thanks
Carbec

[justNo4b]

Hello.
Thank you for your kind comment.
I never tested if perft actually works since forking ShallowBlue, and I am pretty sure I broken it in some way when I was re-writing move generation.
Currently I dont have much time to work on the engine, so I keep this issue in mind, but likely wont fix this in the foreseeable future.