
Chi-chi is a derivative of Stockfish that allows her users to modify Piece Values, King Safety, Space and Mobility parameters, plus it allows you to set different values for 2 stages of the game and switch some of them at some move:

Download links (includes source and a generic x64 compile):
https://www.solidfiles.com/v/yZ7Arqw2LdvzD
https://anonfiles.com/t9o9Z2H7od/chi-chi_zip
https://www.mirrored.to/files/FBV90FAM/ ... .zip_links
Here's a sample game by Jubichess using 50% material for game's start, 110 Space and 110 Mobility:
[pgn][Date "2020.07.23"]
[White "chi-chi"]
[Black "Stockfish XI"]
[Result "1-0"]
[ECO "B30"]
[Annotator "0.60;-0.13"]
[PlyCount "109"]
[TimeControl "240+2"]
{Int@l(R) Core(TM) i9-9900K CPU î 3.60GHz 3600 MHz W=42.4 plies; 19.800kN/s;
17.336.924 TBAs B=50.6 plies; 20.660kN/s; 23.238.307 TBAs} 1. e4 {0.60/29 7
Both last book move} c5 {-0.13/33 16} 2. Nf3 {0.24/29 8} Nc6 {-0.22/29 5 (e6)}
3. Bb5 {0.40/25 3 (Nc3)} e6 {-0.28/26 3} 4. O-O {0.51/25 3} Nge7 {-0.01/30 6}
5. d4 {0.58/29 14 (Ba4)} cxd4 {-0.09/26 3} 6. Nxd4 {0.43/26 4} Qb6 {0.00/30 5
(a6)} 7. Be3 {0.52/27 3 (Nxc6)} Nxd4 {-0.13/27 3} 8. a4 {0.50/26 4 (Na3)} e5 {
-0.48/29 3 (Nec6)} 9. c3 {0.64/29 4} a6 {-0.64/31 3 (Nec6)} 10. cxd4 {0.00/39
10} axb5 {-0.64/30 4} 11. Nc3 {0.00/39 8 (dxe5)} exd4 {0.00/42 12 (bxa4)} 12.
Bxd4 {0.58/28 3} Qd8 {0.00/45 4} 13. Nd5 {0.00/39 16} Nxd5 {0.00/44 4} 14. exd5
{0.29/41 12} f6 {0.00/47 4} 15. Re1+ {0.32/36 3} Kf7 {0.00/49 4} 16. d6 {
0.64/31 5} h5 {0.00/50 37} 17. Qb3+ {0.63/32 4} Kg6 {0.00/1 0} 18. Qd3+ {
0.35/37 8} Kf7 {0.00/54 5} 19. Bc3 {0.56/38 6 (Qb3+)} Ra6 {0.00/39 4 (Rxa4)}
20. Bb4 {1.19/29 4} Rxa4 {0.00/43 4 (g5)} 21. Qd5+ {0.87/43 33} Kg6 {0.00/1 0}
22. Rxa4 {0.96/35 2} bxa4 {0.00/36 6} 23. Re3 {1.02/37 3} Rh6 {0.00/43 4 (h4)}
24. Bd2 {1.41/34 4} Kh7 {0.97/43 34} 25. Re4 {1.41/38 11 (Qf5+)} a3 {1.60/43 32
} 26. bxa3 {1.30/39 4} Qb6 {1.69/45 2} 27. Re8 {1.43/39 11} Qxd6 {1.71/42 3}
28. Qxd6 {1.49/37 3} Bxd6 {1.93/46 5} 29. Bxh6 {1.50/38 3} Kxh6 {2.03/44 4} 30.
Rxc8 {1.66/39 4} Bxa3 {2.03/49 4} 31. Rc3 {1.72/39 4 (Rb8)} Bd6 {2.12/50 13
(Bb2)} 32. Rb3 {1.73/44 3} Bc5 {1.93/54 3} 33. Rxb7 {1.91/43 4} d6 {1.93/54 5}
34. Kf1 {1.82/46 5} h4 {2.31/53 26} 35. Rf7 {1.43/56 7} Kg6 {1.93/52 3} 36. Rd7
{1.87/53 5} f5 {1.90/48 2} 37. Ke2 {1.66/57 5} Kf6 {2.58/54 7} 38. f4 {1.62/56
3} Bg1 {2.58/60 5} 39. h3 {1.62/59 3} Kg6 {2.58/70 2 (Bc5)} 40. Rxd6+ {2.03/59
3} Kf7 {2.58/70 2} 41. Rd7+ {1.84/65 4 (Kf3)} Kf6 {2.58/73 3} 42. Rd5 {1.84/71
3 (Rd6+)} Bh2 {2.58/75 3} 43. Ke3 {1.84/71 8 (Kf3)} Bg3 {2.58/75 2 (Bg1+)} 44.
Rd6+ {1.84/59 6} Kf7 {2.58/84 2} 45. Rd7+ {1.84/75 3} Kg6 {2.58/79 3 (Kf6)} 46.
Kf3 {1.84/69 3 (Rb7)} Kf6 {2.58/81 2} 47. Rb7 {3.45/70 36 (Rd6+)} g6 {2.58/82
2 (Bh2)} 48. Ke3 {4.23/50 8 (Rb6+)} Ke6 {2.58/77 2} 49. Rh7 {4.24/41 1 (Rb6+)}
Kf6 {2.58/76 2} 50. Kd4 {4.25/51 1 (Rc7)} Ke6 {2.58/75 2} 51. Kc5 {4.34/47 2
(Ke3)} Kf6 {2.58/73 2 (Bf2+)} 52. Kd5 {5.23/34 3 (Kc4)} Be1 {9.11/37 16 (Bh2)}
53. Rc7 {6.69/34 2} Bd2 {9.97/40 4 (Bb4)} 54. Rc6+ {7.51/33 1} Kg7 {10.06/36 1
(Kf7)} 55. Ke5 {11.30/34 2} 1-0[/pgn]
Enjoy!