Truechess.com Compares the Champions

Compare by Age Compare 1908-1946 Compare 1947-1972 Compare 1973-2007 Individual Players
Blunders per 1000 moves Average Error per move Percentage of Points Won Complexity of Style
    3 Yr Periods 5 Yr Periods 10 Yr Periods

Blunders per 1000 moves [draws excluded] / Players compared by Age

Key:
Best Value
2nd Best Value
Worst Value Return to TrueChess home Compare Champions home
AGE MORPH STEIN LASK CAPA ALEK EUWE BOTV SMY TAL PETRO SPASS FISC KARP KASP KRAM ANAND
14












15.48

15










8.91
12.19

16










7.62
11.66
14.04
17










7.78
10.59
12.65
18









10.38 7.64 6.40 9.01 5.56 10.63
19



11.14




9.55 6.61 6.15 7.15 5.33 10.54
20



11.33
0.00 18.55

7.85 5.37 3.57 5.57 6.82 9.40
21



15.41 19.36 3.37 8.44 9.80
7.17 5.36 5.92 2.73 5.93 8.89
22 7.69
4.61 4.52 16.54 18.86 4.13 7.71 9.69 8.53 8.99 7.30 5.50 5.46 5.16 7.85
23

5.44
17.84 15.07 7.34 5.40 8.98 6.76 11.91 4.44 5.88 6.49 4.73 8.12
24

4.27 8.87
12.12 4.34 6.05 8.59 6.97 10.27 4.84 4.28 9.58 4.18 8.65
25

5.32 8.58
8.57 7.02 6.19 8.17 5.18 6.17 2.40 4.50 7.95 1.63 8.48
26
66.41 6.40 5.53
6.26 3.63 7.27 9.49 5.10 4.19 3.28 4.04 7.46 4.75 7.97
27
43.39 8.11 4.24
8.40 3.12 5.99 8.29 8.65 4.94 1.08 3.59 6.28 5.79 7.12
28
35.09 8.06 2.73 8.23 10.18 0.00 7.60 6.88 10.67 5.39 2.58 3.17 7.44 5.78 6.19
29
11.52 8.87 3.10 5.26 11.65 1.55 8.28 7.78 10.14 5.18 2.78 5.23 9.19 4.10 6.69
30
17.26 1.63 1.95 4.89 15.22 2.44 6.90 8.95 6.50 4.96
4.83 8.50 11.70 8.37
31
19.83 3.11 1.95 4.10 7.04 1.92 7.64 11.17 4.47 5.65
4.96 7.49 13.69 9.83
32
21.40 4.02 2.67 6.50 9.13 4.83 7.93 11.83 5.60 5.95
2.86 8.64 11.07 8.67
33
20.22 6.73 0.00 8.63 4.75 2.83 7.91 11.97 4.24 5.40
2.63 9.42
10.58
34


0.00 8.29 12.02 5.15 6.01 9.58 5.72 7.32
3.67 7.13
7.62
35


1.56 7.62 10.95 5.00 4.66 8.16 4.88 10.52
3.96 4.63
7.06
36
18.80
12.03 4.70 17.32 7.35 5.08 7.82 7.29 12.96
4.64 1.66
3.56
37
11.73
10.07 3.26 11.30 7.07 4.52 7.23 6.23 10.37
3.70 1.78
1.97
38
11.73
10.39 3.13 9.62 6.10 7.47 7.50 8.06 8.64
4.39 1.28

39
14.60 7.53 4.94 3.66 5.12 14.55 8.61 6.33 8.09 7.23
3.58 1.63

AGE MORPH STEIN LASK CAPA ALEK EUWE BOTV SMY TAL PETRO SPASS FISC KARP KASP KRAM ANAND
40

3.88 4.22 3.07 8.15 9.31 8.52 7.12 6.77 9.28
3.96 3.98

41

3.79 3.79 2.97 9.28 9.31 6.31 6.09 6.32 9.05
3.35 6.48

42

2.93 5.35 4.08 8.40 7.70 4.79 9.89 6.21 9.92
4.12 6.27

43

7.49 10.00 5.00
8.53 2.73 12.97 4.90 7.03
4.53


44


12.46 8.65
7.48 2.88 10.15 2.89 4.97
4.98


45

6.29
7.72 10.59 3.30 2.31 7.18 4.40 1.30
6.54


46
20.13 6.29 1.83 9.78 11.20 7.04 3.00 6.03 6.53 4.76
7.85


47
18.14 7.08 4.37 6.98 12.65 7.67 3.52 6.85 8.68 5.94
10.09


48
18.14 9.43 4.36 6.94 12.29 10.82 3.94 8.44 8.35 6.40
10.71


49
15.95 4.95 6.52 8.79 10.31 8.08 3.07 8.28 6.79 4.43




50
11.74
4.96 8.72 7.82 9.34 1.71 7.68 5.31 4.61




51
11.74

9.50 9.13 7.44 3.26 6.97 5.25 6.98




52
11.70

5.97 8.40 6.14 4.50 7.61 5.24 8.01




53



6.44
7.40 4.40 11.25 7.22 7.13




54
15.39 8.57


10.42 4.01 11.04 5.46 5.83




55
14.66 7.72


11.58 2.56 9.19
7.39




56
27.86 8.04


9.14 5.01







57
27.93 7.79


3.72 3.63







58
20.83 8.65


2.97 3.71







59
16.76




2.64







60
16.49




3.82







61






4.29







62






3.63







63






8.65







64






10.68







65






13.40







66

6.01



10.65







67

8.51



8.14







68






4.48







69






5.04







70






5.45







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Definitions: A move is a blunder when: (A) the "best" move is rated at least 0.75 pawns better by Rybka [2.3.2a] and at least 1.25 pawns better by Crafty [20.14]. ; (B) the player is not making a desperate move because he is "lost" [i.e., the position is no worse than -2.00 pawns]; and (C) the opponent has at least a reasonable chance of saving the game [i.e., the opponent's subsequent disadvantage is less than 1.50 pawns]. (I analyzed with Rybka until I was sure the opponent actually had reasonable practical chances to draw.).

The Average Error per move is the average difference, in centi-pawns, between the "best" move in the position and the actual move played, excluding blunders (as defined above). A score of 7.69 means that the player's average move was 7.69 centi-pawns worse than the best move -- this is the difference between a computer score of +1.32 (for the best move) and +1.24 (rounded off to the nearest centi-pawn). Notice that these are "raw error" scores, not adjusted for the complexity of the position.

Percentage of Points Won is calculated, for all the games analyzed, in the normal way (based on 1-point for victory, ½-point for a draw, and zero for a loss).