Game 2:  Kaidonov vs. Blatny

0.
@Q0
[Introduction: Your partner for Game #2 is the American Grandmaster Gregory Kaidanov, and you have the White pieces. The Black pieces are being conducted by the Czechoslovakian grandmaster Pavel Blatny, who often travels to the U.S.A. to play in Swiss Open tournaments. The setting for this game is Chicago 1999. 

Blatny has a sharp combinational style with a bent for tricky gambits. It's a style of play that garners many wins in the Swiss Opens. Here, in a Budapest Defense (Gambit), Kaidanov has to be at his tactical best to fend off the aggressive Czech. In this he succeeds, and the game soon enters the technical phase, where Kaidanov gets to demonstrate his endgame mastery.  

Gregory Kaidanov, was born in the Ukraine (November 10, 1959), where he learned to play chess at the age of six. Immigrating to America, Kaidanov settled in Lexington, Kentucky, the home of a former US Champion, Jackson W. Showalter (that was back in the 1890's). Very quickly, Kaidanov established himself as one of America's leading players. He was an Olympic Gold Medallist (USA in 1993), and he regularly plays in the U.S. Championship, which is only by invitation. His expertise makes him not only an outstanding player, but one of the premier coaches and teachers in the nation. Which means you can learn from him.]

1.
@Q1
[{F:W}{B:rnbqkbnr/pppppppp/32/PPPPPPPP/RNBQKBNR WHITE}
{S:d2d4}{D:500}{S:g8f6}{D:500}{S:c2c4}{D:500}{S:e7e5}{D:500}{S:d4e5}{D:500}
{S:f6g4}{D:500}{S:c1f4}{D:500}{S:b8c6}{D:500}{S:g1f3}{D:500}{S:f8b4}{D:500}
{S:b1c3}{D:500}{S:d8e7}{D:500}{S:d1d5}{D:500}{S:b4c3}
{QM:Select White's 8th move.;
8. bxc3:Correct.:1;
8. Kd1:Incorrect.  The correct answer was bxc3.:-2}]

2.
@Q2
[{D:1000}{S:b2c3}{A:Wb2c3}{D:1000}{S:f7f6}{A:Bf7f6}{D:2000}{R}
{QM:Select White's 9th move.;
9. e3:Incorrect. The correct answer was exf6.:-1;
9. exf6:Correct.:2;
9. h3:Incorrect. The correct answer was exf6.:-1}]

3.
@Q3
[{R}{D:1000}{S:e5f6}{A:We5f6}{D:1000}{S:g4f6}{A:Bg4f6}{D:2000}{R}
{QM:Select White's 10th move.;
10. Qb5:Incorrect. The correct answer was Qd3.:1;
10. Bxc7:Incorrect. The correct answer was Qd3.:-4;
10. Qd3:Correct.:3;
10. Qd2:Incorrect. The correct answer was Qd3.:1;
10. Qd1:Incorrect. The correct answer was Qd3.:1;
10. Qh5+:Incorrect. The correct answer was Qd3.:-4}]

4.
@Q4
[{R}{D:1000}{S:d5d3}{A:Wd5d3}{D:1000}{S:d7d6}{A:Bd7d6}{D:2000}{R}
{QM:Select White's 11th move.;
11. e3:Incorrect. The correct answer was g3.:2;
11. g3:Correct.:2;
11. Bg5:Incorrect. The correct answer was g3.:2;
11. Rb1:Incorrect. The correct answer was g3.:1;
11. Rd1:Incorrect. The correct answer was g3.:1;
11. Nd4:Incorrect. The correct answer was g3.:1}]

5.
@Q5
[{R}{D:1000}{S:g2g3}{A:Wg2g3}{D:1000}{S:e8g8}{A:Be8g8}{S:h8f8}{A:Bh8f8}{D:2000}{R}
{QM:Select White's 12th move.;
12. Rb1:Incorrect. The correct answer was Bg2.:1;
12. Rd1:Incorrect. The correct answer was Bg2.:1;
12. Nd4:Incorrect. The correct answer was Bg2.:1;
12. e3:Incorrect. The correct answer was Bg2.:1;
12. Bg5:Incorrect. The correct answer was Bg2.:1;
12. Bg2:Correct.:2;
12. h4:Incorrect. The correct answer was Bg2.:1}]

6.
@Q6
[{R}{D:1000}{S:f1g2}{A:Wf1g2}{D:1000}{S:c8d7}{A:Bc8d7}{D:2000}{R}
{QM:Select White's 13th move.;
13. Rb1:Incorrect. The correct answer was 0-0.:1;
13. Rd1:Incorrect. The correct answer was 0-0.:1;
13. Nd4:Incorrect. The correct answer was 0-0.:1;
13. e3:Incorrect. The correct answer was 0-0.:1;
13. Bg5:Incorrect. The correct answer was 0-0.:1;
13. h3:Incorrect. The correct answer was 0-0.:1;
13. h4:Incorrect. The correct answer was 0-0.:1;
13. Ng5:Incorrect. The correct answer was 0-0.:1;
13. 0-0:Correct.:2}]

7.
@Q7
[{R}{D:1000}{S:e1g1}{A:We1g1}{S:h1f1}{A:Wh1f1}{D:1000}{S:a8e8}{A:Ba8e8}{D:2000}{R}
{QM:Select White's 14th move.;
14. Rab1:Incorrect. The correct answer was c5.:2;
14. c5:Correct.:5;
14. Rad1:Incorrect. The correct answer was c5.:-1;
14. Rfd1:Incorrect. The correct answer was c5.:-1;
14. a4:Incorrect. The correct answer was c5.:-1;
14. Nd4:Incorrect. The correct answer was c5.:2;
14. e3:Incorrect. The correct answer was c5.:2;
14. Bg5:Incorrect. The correct answer was c5.:-1;
14. Ng5:Incorrect. The correct answer was c5.:-1;
14. h3:Incorrect. The correct answer was c5.:-1;
14. h4:Incorrect. The correct answer was c5.:-1;
14. Rae1:Incorrect. The correct answer was c5.:2;
14. Rfe1:Incorrect. The correct answer was c5.:2}]

8.
@Q8
[{R}{D:1000}{S:c4c5}{A:Wc4c5}{D:1000}{S:d6c5}{A:Bd6c5}{D:2000}{R}
{QM:Select White's 15th move.;
15. Qc4+:Incorrect. The correct answer was Bxc7.:1;
15. Bxc7:Correct.:1}]

9.
@Q9
[{R}{D:1000}{S:f4c7}{A:Wf4c7}{D:1000}{S:c5c4}{A:Bc5c4}{D:2000}{R}
{QM:Select White's 16th move.;
16. Qxc4+:Incorrect. The correct answer was Qd1.:-2;
16. Qd6:Incorrect. The correct answer was Qd1.:-1;
16. Bd6:Incorrect. The correct answer was Qd1.:-2;
16. Qc2:Incorrect. The correct answer was Qd1.:-1;
16. Qd2:Incorrect. The correct answer was Qd1.:-1;
16. Qd1:Correct.:3}]

10.
@Q10
[{R}{D:1000}{S:d3d1}{A:Wd3d1}{D:1000}{S:f6e4}{A:Bf6e4}{D:2000}{R}
{QM:Select White's 17th move.;
17. Qa4:Incorrect. The correct answer was Ne5.:-1;
17. Rc1:Incorrect. The correct answer was Ne5.:2;
17. Qc2:Incorrect. The correct answer was Ne5.:-2;
17. Bd6:Incorrect. The correct answer was Ne5.:-3;
17. Ne5:Correct.:6;
17. Qd5+:Incorrect. The correct answer was Ne5.:3}]

11.
@Q11
[{R}{D:1000}{S:f3e5}{A:Wf3e5}{D:1000}{S:e4c3}{A:Be4c3}{D:2000}{R}
{QM:Select White's 18th move.;
18. Qc1:Incorrect. The correct answer was Qxd7.:-4;
18. Qd6:Incorrect. The correct answer was Qxd7.:-2;
18. Bd5+:Incorrect. The correct answer was Qxd7.:-3;
18. Qxd7:Correct.:2;
18. Qd6:Incorrect. The correct answer was Qxd7.:-2;
18. Nxc6:Incorrect. The correct answer was Qxd7.:-1;
18. Bxc6:Incorrect. The correct answer was Qxd7.:-3}]

12.
@Q12
[{R}{D:1000}{S:d1d7}{A:Wd1d7}{D:1000}{S:e7d7}{A:Be7d7}{D:2000}{R}
{QM:Select White's 19th move.;
19. Bxc6:Incorrect. The correct answer was Nxd7.:-4;
19. Nxd7:Correct.:1}]

13.
@Q13
[{R}{D:1000}{S:e5d7}{A:We5d7}{D:1000}{S:f8f7}{A:Bf8f7}{D:2000}{R}
{QM:Select White's 20th move.;
20. Rac1:Incorrect. The correct answer was Bh3.:-3;
20. Rfc1:Incorrect. The correct answer was Bh3.:-3;
20. Bxc6:Incorrect. The correct answer was Bh3.:-2;
20. Rad1:Incorrect. The correct answer was Bh3.:-2;
20. Rfd1:Incorrect. The correct answer was Bh3.:-2;
20. Ne5:Incorrect. The correct answer was Bh3.:-2;
20. Bh3:Correct.:3;
20. Bd5:Incorrect. The correct answer was Bh3.:-2}]

14.
@Q14
[{R}{D:1000}{S:g2h3}{A:Wg2h3}{D:1000}{S:e8e7}{A:Be8e7}{D:2000}{R}
{QM:Select White's 21st move.;
21. Rac1:Incorrect. The correct answer was f4.:-2;
21. Rfc1:Incorrect. The correct answer was f4.:-2;
21. Bd6:Incorrect. The correct answer was f4.:3;
21. Bf4:Incorrect. The correct answer was f4.:3;
21. f4:Correct.:5}]

15.
@Q15
[{R}{D:1000}{S:f2f4}{A:Wf2f4}{D:1000}{S:e7d7}{A:Be7d7}{D:2000}{R}
{QM:Select White's 22nd move.;
22. Bxd7:Correct.:1;
22. Be6:Incorrect. The correct answer was Bxd7.:-2}]

16.
@Q16
[{R}{D:1000}{S:h3d7}{A:Wh3d7}{D:1000}{S:f7d7}{A:Bf7d7}{D:2000}{R}
{QM:Select White's 23rd move.;
23. Be5:Correct.:1;
23. Rf3:Incorrect. The correct answer was Be5.:-2;
23. Bb8:Incorrect. The correct answer was Be5.:-2}]

17.
@Q17
[{R}{D:1000}{S:c7e5}{A:Wc7e5}{D:1000}{S:c6e5}{A:Bc6e5}{D:2000}{R}
{QM:Select White's 24th move.;
24. Rae1:Incorrect. The correct answer was fxe5.:-2;
24. fxe5:Correct.:1}]

18.
@Q18
[{R}{D:1000}{S:f4e5}{A:Wf4e5}{D:1000}{S:d7e7}{A:Bd7e7}{D:2000}{R}
{QM:Select White's 25th move.;
25. Rae1:Incorrect. The correct answer was Rf3.:-1;
25. Rfe1:Incorrect. The correct answer was Rf3.:1;
25. Kf2:Incorrect. The correct answer was Rf3.:1;
25. Rf2:Incorrect. The correct answer was Rf3.:1;
25. Rf5:Incorrect. The correct answer was Rf3.:1;
25. Rf4:Incorrect. The correct answer was Rf3.:-2;
25. Rf3:Correct.:3}]

19.
@Q19
[{R}{D:1000}{S:f1f3}{A:Wf1f3}{D:1000}{S:c3e2}{A:Bc3e2}{D:2000}{R}
{QM:Select White's 26th move.;
26. Kf1:Incorrect. The correct answer was Kf2.:1;
26. Kf2:Correct.:2;
26. Kg2:Incorrect. The correct answer was Kf2.:1;
26. Kh1:Incorrect. The correct answer was Kf2.:1}]

20.
@Q20
[{R}{D:1000}{S:g1f2}{A:Wg1f2}{D:1000}{S:e2d4}{A:Be2d4}{D:2000}{R}
{QM:Select White's 27th move.;
27. Ra3:Incorrect. The correct answer was Rf4.:-3;
27. Rc3:Incorrect. The correct answer was Rf4.:1;
27. Re3:Incorrect. The correct answer was Rf4.:-1;
27. Rf4:Correct.:3}]

21.
@Q21
[{R}{D:1000}{S:f3f4}{A:Wf3f4}{D:1000}{S:d4c6}{A:Bd4c6}{D:2000}{R}
{QM:Select White's 28th move.;
28. Rxc4:Correct.:1;
28. Re1:Incorrect. The correct answer was Rxc4.:-1;
28. Re4:Incorrect. The correct answer was Rxc4.:-1}]

22.
@Q22
[{R}{D:1000}{S:f4c4}{A:Wf4c4}{D:1000}{S:c6e5}{A:Bc6e5}{D:2000}{R}
{QM:Select White's 29th move.;
29. Ra4:Incorrect. The correct answer was Re4.:1;
29. Rb4:Incorrect. The correct answer was Re4.:-3;
29. Rc8+:Incorrect. The correct answer was Re4.:1;
29. Rc5:Incorrect. The correct answer was Re4.:-3;
29. Rc3:Incorrect. The correct answer was Re4.:1;
29. Rd4:Incorrect. The correct answer was Re4.:1;
29. Re4:Correct.:3;
29. Rf4:Incorrect. The correct answer was Re4.:-1}]

23.
@Q23
[{R}{D:1000}{S:c4e4}{A:Wc4e4}{D:1000}{S:g8f7}{A:Bg8f7}{D:2000}{R}
{QM:Select White's 30th move.;
30. Rc1:Incorrect. The correct answer was Kg2.:-3;
30. Rd1:Incorrect. The correct answer was Kg2.:-1;
30. Rae1:Incorrect. The correct answer was Kg2.:-1;
30. Kg2:Correct.:3;
30. Ke3:Incorrect. The correct answer was Kg2.:1;
30. Ke2:Incorrect. The correct answer was Kg2.:1}]

24.
@Q24
[{R}{D:1000}{S:f2g2}{A:Wf2g2}{D:1000}{S:f7e6}{A:Bf7e6}{D:2000}{R}
{QM:Select White's 31st move.;
31. a4:Incorrect. The correct answer was Rae1.:1;
31. Rb1:Incorrect. The correct answer was Rae1.:1;
31. Rc1:Incorrect. The correct answer was Rae1.:1;
31. Rd1:Incorrect. The correct answer was Rae1.:1;
31. Rae1:Correct.:2;
31. Rf1:Incorrect. The correct answer was Rae1.:1;
31. g4:Incorrect. The correct answer was Rae1.:1}]

25.
@Q25
[{R}{D:1000}{S:a1e1}{A:Wa1e1}{D:1000}{S:e6d5}{A:Be6d5}{D:2000}{R}
{QM:Select White's 32nd move.;
32. Ra4:Incorrect. The correct answer was Rf4.:1;
32. Rb4:Incorrect. The correct answer was Rf4.:1;
32. Rd1+:Incorrect. The correct answer was Rf4.:-3;
33. Rxe5+:Incorrect. The correct answer was Rf4.:-1;
33. Rf4:Correct.:2;
33. Rh4:Incorrect. The correct answer was Rf4.:1}]

26.
@Q26
[{R}{D:1000}{S:e4f4}{A:We4f4}{D:1000}{S:a7a5}{A:Ba7a5}{D:2000}{R}
{QM:Select White's 33rd move.;
33. a4:Correct.:3;
33. Rd1+:Incorrect. The correct answer was a4.:2;
33. R1e4:Incorrect. The correct answer was a4.:1;
33. R4e4:Incorrect. The correct answer was a4.:1;
33. Rf5:Incorrect. The correct answer was a4.:1}]

27.
@Q27
[{R}{D:1000}{S:a2a4}{A:Wa2a4}{D:1000}{S:b7b6}{A:Bb7b6}{D:2000}{R}
{QM:Select White's 34th move.;
34. Rb1:Incorrect. The correct answer was Rfe4.:1;
34. Rd1+:Incorrect. The correct answer was Rfe4.:1;
34. Rfe4:Correct.:2;
34. Rf8:Incorrect. The correct answer was Rfe4.:1;
34. Rf5:Incorrect. The correct answer was Rfe4.:1}]

28.
@Q28
[{R}{D:1000}{S:f4e4}{A:Wf4e4}{D:1000}{S:h7h5}{A:Bh7h5}{D:2000}{R}
{QM:Select White's 35th move.;
35. R4e3:Incorrect. The correct answer was h4.:1;
35. R4e2:Incorrect. The correct answer was h4.:1;
35. Rf4:Incorrect. The correct answer was h4.:1;
35. Rh4:Incorrect. The correct answer was h4.:1;
35. h4:Correct.:3}]

29.
@Q29
[{R}{D:1000}{S:h2h4}{A:Wh2h4}{D:1000}{S:e7e6}{A:Be7e6}{D:2000}{R}
{QM:Select White's 36th move.;
36. R4e3:Incorrect. The correct answer was R4e2.:1;
36. R4e2:Correct.:3;
36. Rf4:Incorrect. The correct answer was R4e2.:1;
36. Kf2:Incorrect. The correct answer was R4e2.:-1;
36. Kh2:Incorrect. The correct answer was R4e2.:-1;
36. Kh3:Incorrect. The correct answer was R4e2.:-3}]

30.
@Q30
[{R}{D:1000}{S:e4e2}{A:We4e2}{D:1000}{S:d5d6}{A:Bd5d6}{D:2000}{R}
{QM:Select White's 37th move.;
37. Rb1:Incorrect. The correct answer was Kh3.:1;
37. Rb2:Incorrect. The correct answer was Kh3.:1;
37. Rd1+:Incorrect. The correct answer was Kh3.:1;
37. Rd2+:Incorrect. The correct answer was Kh3.:1;
37. Kh2:Incorrect. The correct answer was Kh3.:-3;
37. Kh3:Correct.:3}]

31.
@Q31
[{R}{D:1000}{S:g2h3}{A:Wg2h3}{D:1000}{S:g7g6}{A:Bg7g6}{D:2000}{R}
{QM:Select White's 38th move.;
38. Rb1:Incorrect. The correct answer was Kg2.:1;
38. Rb2:Incorrect. The correct answer was Kg2.:1;
38. Rd1+:Incorrect. The correct answer was Kg2.:1;
38. Rd2+:Incorrect. The correct answer was Kg2.:1;
38. Kg2:Correct.:2}]

32.
@Q32
[{R}{D:1000}{S:h3g2}{A:Wh3g2}{D:1000}{S:d6d5}{A:Bd6d5}{D:2000}{R}
{QM:Select White's 39th move.;
39. Rb1:Correct.:4;
39. Rb2:Incorrect. The correct answer was Rb1.:4;
39. Rd1+:Incorrect. The correct answer was Rb1.:1;
39. Rd2+:Incorrect. The correct answer was Rb1.:1;
39. Re4:Incorrect. The correct answer was Rb1.:1}]

33.
@Q33
[{R}{D:1000}{S:e1b1}{A:We1b1}{D:1000}{S:d5d4}{A:Bd5d4}{D:2000}{R}
{QM:Select White's 40th move.;
40. R2b2:Incorrect. The correct answer was Rb5.:1;
40. Rb5:Correct.:4;
40. Rb3:Incorrect. The correct answer was Rb5.:1;
40. Rd1+:Incorrect. The correct answer was Rb5.:1;
40. Rd2+:Incorrect. The correct answer was Rb5.:1}]

34.
@Q34
[{R}{D:1000}{S:b1b5}{A:Wb1b5}{D:1000}{S:e6e7}{A:Be6e7}{D:2000}{R}
{QM:Select White's 41st move.;
41. R2b2:Incorrect. The correct answer was Rxb6.:-1;
41. Rxb6:Correct.:1;
41. Rc2:Incorrect. The correct answer was Rxb6.:-1;
41. Rd2+:Incorrect. The correct answer was Rxb6.:-1}]

35.
@Q35
[{R}{D:1000}{S:b5b6}{A:Wb5b6}{D:1000}{S:e5c4}{A:Be5c4}{D:2000}{R}
{QM:Select White's 42nd move.;
42. Rbe6:Incorrect. The correct answer was Rxe7.:1;
42. Rxe7:Correct.:2;
42. Rxg6:Incorrect. The correct answer was Rxe7.:-3}]

36.
@Q36
[{R}{D:1000}{S:e2e7}{A:We2e7}{D:1000}{S:c4b6}{A:Bc4b6}{D:2000}{R}
{QM:Select White's 43rd move.;
43. Ra7:Correct.:2;
43. Re6:Incorrect. The correct answer was Ra7.:1;
43. Rg7:Incorrect. The correct answer was Ra7.:1}]

37.
@Q37
[{R}{D:1000}{S:e7a7}{A:We7a7}{D:1000}{S:b6a4}{A:Bb6a4}{D:2000}{R}
{QM:Select White's 44th move.;
44. Rxa5:Correct.:1;
44. Kf3:Incorrect. The correct answer was Rxa5.:1}]

38.
@Q38
[{R}{D:1000}{S:a7a5}{A:Wa7a5}{D:1000}{S:a4c5}{A:Ba4c5}{D:2000}{R}
{QM:Select White's 45th move.;
45. Ra8:Incorrect. The correct answer was Kf3.:1;
45. Ra7:Incorrect. The correct answer was Kf3.:1;
45. Kf3:Correct.:3;
45. g4:Incorrect. The correct answer was Kf3.:1}]

39.
@Q39
[{R}{D:1000}{S:g2f3}{A:Wg2f3}{D:1000}{S:c5e6}{A:Bc5e6}{D:2000}{R}
{QM:Select White's 46th move.;
46. Ra6:Incorrect. The correct answer was Rb5.:1;
46. Ra4+:Incorrect. The correct answer was Rb5.:1;
46. Rb5:Correct.:4;
46. g4:Incorrect. The correct answer was Rb5.:1}]

40.
@Q40
[{R}{D:1000}{S:a5b5}{A:Wa5b5}{D:1000}{S:d4c4}{A:Bd4c4}{D:2000}{R}
{QM:Select White's 47th move.;
47. Ra5:Incorrect. The correct answer was Re5.:1;
47. Rb6:Incorrect. The correct answer was Re5.:1;
47. Re5:Correct.:3}]

41.
@Q41
[BONUS QUESTIONS]

BONUS QUESTIONS
42.
@Q42
[{D:800}{F:W}{B:r1b1k2r/ppppqppp/2n5/3QP3/2P2Bn1/2P2N2/P3PPPP/R3KB1R WHITE}
{R}{D:1000}{S:e7a3}{A:Be7a3}{D:2000}{R}
{QM:Bonus Question 1. 
If Black plays 8...Qa3, should White respond by either;
9. Rc1:This is best. Black can pick up the a-pawn, 9...Qxa2, but after 10. h3 Nh6 11. e4, White has a big positional advantage. He has better development and much more space in the center.:1;
9. Qd2:This doesn't accomplish much. Black can return his Queen to e7, attacking the e5-pawn and White has nothing better than 10. Qd5, repeating the position.:0}]

43.
@Q43
[{F:W}{B:4rrk1/pppbq1pp/2np1n2/2P5/5B2/2PQ1NP1/P3PPBP/R4RK1 WHITE}
{R}{D:1000}{S:e7e2}{A:Be7e2}{D:1000}{R}{S:d3e2}{A:Wd3e2}{D:1000}{R}{S:e8e2}{A:Be8e2}{D:1000}{R}{S:c5d6}{A:Wc5d6}{D:1000}{R}{S:f6d5}{A:Bf6d5}{D:2000}{R}
{VB:Bonus Question 2. 
In the event of 14...Qxe2 15. Qxe2 Rxe2 16. cxd6 Nd5, White can still keep the advantage. Give his next move.;f3e5;This is the way to go. If 17...Nxf4 then 18. Nxd7. And if 17...Nxe5, then 18. Bxd5+.:2;{R}{B:5rk1/pppb2pp/2nP/3n4/5B2/2P2NP1/P3rPBP/R4RK1}{A:Wf3e5}{S:f3e5}Incorrect. White keeps the advantage by playing Ne5.}]

44.
@Q44
[{F:W}{B:4rrk1/ppBbq1pp/2n2n2/2p5/8/2PQ1NP1/P3PPBP/R4RK1 WHITE}
{R}{D:1000}{S:e7e2}{A:Be7e2}{D:1000}{R}{S:d3e2}{A:Wd3e2}{D:1000}{S:e8e2}{A:Be8e2}{D:2000}{R}
{VB:Bonus Question 3. 
Black avoided 15...Qxe2 16. Qxe2 Rxe2. Why? Give White's next move.;c7d6;After 16...Rxe2, White has 17. Bd6 Rfe8 18. Bxc5, remaining a pawn ahead.:1;{R}{B:5rk1/ppBb2pp/2n2n2/2p5/8/2P2NP1/P3rPBP/R4RK1}{A:Wc7d6}{S:c7d6}Incorrect. White would play Bd6.}]

45.
@Q45
[{F:B}{B:4rrk1/ppBbq1pp/2n2n2/8/2p5/2PQ1NP1/P3PPBP/R4RK1 BLACK}
{R}{D:1000}{S:d3c4}{A:Wd3c4}{D:2000}{R}
{VB:Bonus Question 4. 
What happens after 16. Qxc4+? Give Black's next move.;d7e6;The move 16. Qxc4+ is a blunder. With 16...Be6, Black blocks the check and after White moves his Queen, Black gets the c7-Bishop. For example, 17. Qf4 Nd5 18. Bd6 Nxf4 19. Bxe7 Nxe2+ 20. Kh1 Rxe7.:1;{R}{B:4rrk1/ppBbq1pp/2n2n2/8/2Q5/2P2NP1/P3PPBP/R4RK1}{A:Bd7e6}{S:d7e6}Incorrect. Black's best move would be to play Be6.}]

46.
@Q46
[{F:W}{B:4rrk1/ppBbq1pp/2n2n2/8/2p5/2P2NP1/P3PPBP/R2Q1RK1 WHITE}
{R}{D:1000}{S:e7e2}{A:Be7e2}{D:2000}{R}
{VB:Bonus Question 5. 
Why did Black avoid 16...Qxe2? Please give White's next move.;c7d6;This puts Black in a horrible tangle. If 17...Rf7, then 18. Ng5 wins the exchange. And 17...Qxd1 18. Raxd1 Ne7 19. Rfe1 is also pretty bad.:1;{R}{B:4rrk1/ppBb2pp/2n2n2/8/2p5/2P2NP1/P3qPBP/R2Q1RK1}{A:Wc7d6}{S:c7d6}Incorrect. White would play Bd6.}]

47.
@Q47
[{F:B}{B:4rrk1/ppBbq1pp/2n5/8/2p1n3/2P2NP1/P3PPBP/R2Q1RK1 BLACK}
{R}{D:1000}{S:d1c2}{A:Wd1c2}{D:2000}{R}
{VB:Bonus Question 6. 
What happens after 17. Qc2, guarding the c3-pawn?  Give Black's next move.;d7f5;With this Black sets up a double discovery. The Black Queen is unmasked and attacks the c7-Bishop. And if 18. Bf4, then 18...Ng3, discovers on the White Queen, winning at least the exchange.:1;{R}{B:4rrk1/ppBbq1pp/2n5/8/2p1n3/2P2NP1/P1Q1PPBP/R4RK1}{A:Bd7f5}{S:d7f5}Incorrect. Black's best move would be to play Bf5.}]

48.
@Q48
[{F:W}{B:4rrk1/ppBbq1pp/2n5/4N3/2p1n3/2P3P1/P3PPBP/R2Q1RK1 WHITE}
{R}{D:1000}{S:c6e5}{A:Bc6e5}{D:1000}{S:g2e4}{A:Wg2e4}{D:1000}{S:e5f7}{A:Be5f7}{D:1000}
{S:e4d5}{A:We4d5}{D:2000}{R}
{VB:Bonus Question 7. 
After 17...Nxe5 18. Bxe4 Nf7 19. Bd5, what move does White threaten to play?;c7d6;This is the threat, and would it win the exchange. Note that 20...Qxd6? fails to 21. Bxf7+ and 22. Qxd6.:2;{R}{B:4rrk1/ppBbqnpp/8/3B4/2p5/2P3P1/P3PP1P/R2Q1RK1}{A:Wc7d6}{S:c7d6}Incorrect. White threatens to play Bd6.}]

49.
@Q49
[{F:B}{B:4rrk1/ppBbq1pp/2n5/4N3/2p5/2n3P1/P3PPBP/R2Q1RK1 BLACK}
{R}{D:1000}{S:d1c1}{A:Wd1c1}{D:2000}{R}
{VB:Bonus Question 8. 
It doesn't pay to attack the Black Knight by 18. Qc1 because of what Black move?;c3e2;This forks the King and Queen.:1;{R}{B:4rrk1/ppBbq1pp/2n5/4N3/2p5/2n3P1/P3PPBP/R1Q2RK1}{A:Bc3e2}{S:c3e2}Incorrect. Black would then play Nxe2+.}]

50.
@Q50
[{F:B}{B:6k1/pp2r1pp/8/4P3/2p5/2n3P1/P3P2P/R4RK1 BLACK}{R}
{VB:Bonus Question 9. 
It looks like Black is about to take one of the White e-pawns (e5 or e2).  But what is Black's real threat?;b7b5;This secures the passed c4-pawn and puts Black back in the game. That's why Kaidanov makes no effort to defend either of his weak e-pawns. Instead he musters all his resources to eliminate the c4-pawn, before it can become a problem.:1;{B:6k1/pp2r1pp/8/4P3/2p5/2n3P1/P3P2P/R4RK1}{A:Bb7b5}{S:b7b5}Incorrect. Black's real threat is b5.}]

51.
@Q51
[{F:W}{B:6k1/pp2r1pp/8/4P3/2p5/5RP1/P3nK1P/R7 WHITE}
{R}{D:1000}{S:e7e5}{A:Be7e5}{D:2000}{R}
{VB:Bonus Question 10. 
How does White answer 26...Rxe5?;a1e1;Black's knight is pinned and lost.:1;{R}{B:6k1/pp4pp/8/4r3/2p5/5RP1/P3nK1P/R7}{A:Wa1e1}{S:a1e1}Incorrect. White answers with Re1.}]

52.
@Q52
[{F:W}{B:6k1/pp2r1pp/8/4P3/2pn1R2/6P1/P4K1P/R7 WHITE}
{R}{D:1000}{S:d4c2}{A:Bd4c2}{D:2000}{R}
{QM:Bonus Question 11. 
If Black plays 27...Nc2 (instead of 27...Nc6 as played in the game), how should White reply?;
28. Rc1:This loses the exchange after 28...Nb4 and 29...Nd3 (with or without check). There's no stopping it.:0;
28. Rd1:This is the correct move, threatening mate after 29. Rd8+. If Black attends to the mate, say 28...g6, then White gathers in the c4-pawn, 29. Rxc4.:2}]

53.
@Q53
[{F:B}{B:8/6p1/1p2r3/p2kn2p/P6P/6P1/4R1K1/4R3 BLACK}
{R}{D:1000}{S:d5d4}{A:Bd5d4}{D:1000}{S:e2d2}{A:We2d2}{D:2000}{R}
{VB:Bonus Question 12. 
After 36...Kd4, 37. Rd2+, what is the only move for Black that doesn't lose quickly?;d4c5;This try is the only decent move. It can be found by the process of eliminating the alternatives.  
(a) 37...Nd3 38. Rxe6, 
(b) 37...Kc3 38. Rd5, 
(c) 37...Kc4 38. Rc1+ Kb3 39. Re2 Nd3 (else 40. Re1) 40. Rb1+ and 41. Rxe6. What does White do after 37...Kc5?  Probably the idea used in the game: 38. Rb2 and 39. Rb5(+).:2;{R}{B:8/6p1/1p2r3/p3n2p/P2k3P/6P1/3R2K1/4R3}{A:Bd4c5}{S:d4c5}Incorrect. Black's best chance is to play Kc5.}]

54.
@Q54
[Conclusion: P. Blatny essays the tricky Budapest Gambit, an opening in which he has some expertise, and some success, though against weaker opposition. Against a fellow Grandmaster, proficient in all phases of the game (opening, middlegame, and endgame) things are a little different. 

First, Kaidanov plays 6. Nc3 instead of the more sedate 6. Nd2, clearly indicating that he intends to keep the gambit pawn. After the consolidating moves (7-13) Kaidanov uncorks an opening novelty, 14. c5! clearing out the middle of the board for his minor pieces. The open center is exploited by the surprising Knight offer, 17. Ne5!, which leads to further material gains (the exchange) as well as some simplification (the queens come off the board). 

The super accurate move, 21. f4, insures that, after the exchanges on e5, White's Rook becomes active on the newly opened f-file. That's enough to clarify White's endgame advantage. A pin on the e-file ties Black down and when his pawn moves are exhausted he winds up in zugzwang, having to surrender even more material. 

At the very end 47...Nc5 is met most simply by 48. Rxc5+ Kxc5 49. Kf4 and 50. Kg5 wiping out Black's kingside.]