In this game why was beginner Level Lost? Why it sacrificed its
knight? was there any other move.

What were the wrong moves that black should have avoided?

Game Played between spook and beginner at GetClub.com

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spook: (White)
beginner: (Black)
Game Played at: http://www.GetClub.com/Chess.html
View Recorded Game: http://www.getclub.com/playgame.php?...634&game=Chess
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White -- Black
(spook) -- (beginner)

1. d2-d4{8} Ng8-f6{0}
2. c2-c4{8} g7-g6{0}
3. Nb1-c3{6} Bf8-g7{0}
4. e2-e4{4} d7-d6{0}
5. f2-f3{10} Nb8-c6{8}
6. Bc1-e3{4} Bc8-d7{6}
7. Qd1-d2{12} Ke8-g8{6}
8. Ke1-c1{12} e7-e6{6}
9. g2-g4{10} b7-b6{6}
10. h2-h4{10} Ra8-c8{8}
11. h4-h5{6} e6-e5{6}
12. d4-d5{6} Nc6-b4{12}
13. Be3-h6{14} a7-a5{8}
14. Ng1-e2{20} Kg8-h8{12}
15. Bh6-g7{12} Kh8-g7{6}
16. h5-g6{12} f7-g6{10}
17. Qd2-h6{6} Kg7-f7{16}
18. g4-g5{26} Nf6-d5{0}
19. Qh6-h7{12} Kf7-e8{8}
20. Qh7-g6{6} Rf8-f7{10}
21. c4-d5{18} Ke8-e7{12}
22. Ne2-g3{36} Qd8-g8{6}
23. Qg6-h5{26} Rf7-g7{0}
24. Ng3-f5{44} Bd7-f5{8}
25. e4-f5{4} Rg7-g5{8}
26. Qh5-h7{8} Ke7-d8{10}
27. Qh7-g8{32} Rg5-g8{6}
28. a2-a3{4} Rc8-a8{8}
29. a3-b4{6} a5-b4{6}
30. Nc3-e4{6} Ra8-a1{8}
31. Kc1-d2{6} Ra1-a2{6}
32. Rd1-b1{8} Ra2-a5{14}
33. Bf1-c4{6} Kd8-c8{6}
34. f5-f6{6} Kc8-b8{8}
35. f6-f7{16} Rg8-c8{12}
36. Rh1-g1{12} Ra5-a4{6}
37. Rg1-g8{6} b4-b3{6}
38. Rg8-c8{14} Kb8-c8{8}
39. Qf7-f8{Q}{6} Kc8-b7{10}
40. Bc4-b3{12} Ra4-d4{12}
41. Kd2-e3{8} Rd4-b4{6}
42. Ne4-d2{28} Rb4-f4{16}
43. Qf8-e8{8} b6-b5{10}
44. Rb1-a1{12} Rf4-a4{6}
45. Qe8-b5{8} Kb7-c8{6}
46. Bb3-a4{16} e5-e4{6}
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spook: (White)
beginner: (Black)
Game Played at: http://www.GetClub.com/Chess.html
View Recorded Game: http://www.getclub.com/playgame.php?...634&game=Chess

You can see in some moves black played in 0 seconds it is because it
thought its move in Opponents time.

The Moves where Black played instantaniously other than Opening are.

18. g4-g5{26} Nf6-d5{0}

23. Qg6-h5{26} Rf7-g7{0}

So you save time in game as Beginner thinks in your time.

Bye
Sanny

Play Chess at: http://www.GetClub.com/Chess.html