CheungKaMing vs OngJunJie

CheungKaMing played Red and OngJunJie played Black in a rated rapid game at 10+0. Black wins by checkmate in 77 moves.

The moves

Every move of the game in WXF notation, with Red's move first in each pair. The board above replays them one at a time.

1. 1.C8=6p7+1
2. 2.C2=1c8=4
3. 3.E3+5c2=3
4. 4.R9+1h8+7
5. 5.P9+1a6+5
6. 6.R9=2p9+1
7. 7.H8+9p1+1
8. 8.R2+3r9=8
9. 9.R2=6c4+5
10. 10.C1=6c3=6
11. 11.A4+5h2+3
12. 12.P9+1c6-2
13. 13.H2+4h7+6
14. 14.R6=5c6+8
15. 15.H9+8r1+4
16. 16.H8+7r1-1
17. 17.R5=4c6=8
18. 18.P7+1h6-5
19. 19.H7+5e7+5
20. 20.R1=2a5-6
21. 21.R4+1r1=4
22. 22.R4-3c8-2
23. 23.P5+1r4-2
24. 24.R4-1r4=8
25. 25.R4+4c8-2
26. 26.R4+1c8+2
27. 27.R2+2a6+5
28. 28.C6+6a5-6
29. 29.C6-4c8-1
30. 30.C6-3c8+1
31. 31.K5=4c8-1
32. 32.C6+1h3+4
33. 33.R4-1h4-3
34. 34.R4+1+r+2
35. 35.R4+2a6+5
36. 36.P7+1e3+1
37. 37.P7+1h3+1
38. 38.P7=6e1-3
39. 39.P6=7+r-1
40. 40.P7=8h1+2
41. 41.R2+1h2-4
42. 42.P8=7c8-2
43. 43.K4=5c8=9
44. 44.R4=1+r+4
45. 45.C6+7c9+3
46. 46.R1-3-r+1
47. 47.P5+1e5-7
48. 48.P5=6a5-4
49. 49.P6+1k5+1
50. 50.A5-4p5+1
51. 51.E5-3k5=6
52. 52.R1+1c9=7
53. 53.E7+5c7=6
54. 54.P7+1c6=3
55. 55.A6+5+r-3
56. 56.R1-1c3-2
57. 57.R1-4+r=6
58. 58.P7=8p7+1
59. 59.R1+8c3+1
60. 60.P8=9c3=1
61. 61.R1-6c1=5
62. 62.K5=6r6=4
63. 63.K6=5r4=6
64. 64.R1=5r8+2
65. 65.A5+4r6+3
66. 66.R5+1p5+1
67. 67.-A+5p5+1
68. 68.P9+1p5+1
69. 69.E3+5r8+6
70. 70.E5-3r8=7
71. 71.A5-4r6=3
72. 72.+A-5r3=5
73. 73.K5=6e3+5
74. 74.K6+1r5=4
75. 75.A5+6p7=6
76. 76.A4+5r4=1
77. 77.A5+4r1+2