Seems like a bug in move generator

[maksimKorzh]

I found these perft results when was testing move generator in my xiangqi engine:

rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR w
      depth       nodes    checks    captures
          1          44         0           2
          2        1920         6          72
          3       79666       384        3159
          4     3290240     19380      115365
          5   133312995    953251     4917734  
          6  5392831844


      r1ba1a3/4kn3/2n1b4/pNp1p1p1p/4c4/6P2/P1P2R2P/1CcC5/9/2BAKAB2 w
      depth       nodes    checks    captures
          1          38         1           1
          2        1128        12          10
          3       43929      1190        2105
          4     1339047     21299       31409
          5    53112976   1496697     3262495

Your lib only passes perft depth 2 for initial position