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All Database Statistics

CategoryNumber of positions
Sacrifice - Rook 717
Sacrifice - Queen 701
Deflection of Defender 504
Pin - Absolute 406
Sacrifice - Bishop 376
Passed Pawn 368
Sacrifice - Knight 365
Lines opening 347
Fork 313
Exchange 303
1 2 3 4 5 6 7 8 9 10 ...
Rough Material BalanceNumber of positions
Unclassified 3398
Pawn ending 265
Light pieces Ending 124
Heavy pieces ending 99
Rooks ending 64
Light piece against Pawns Ending 49
Rook against pawns 47
Queen and Pawns ending 32
Same colored Bishops 31
Queen against light pieces ending 25
1 2 3
White MaterialNumber of positions
Unclassified 1497
148
132
many 108
90
77
many 67
64
62
many 58
1 2 3 4 5 6 7 8 9 10 ...
Black MaterialNumber of positions
Unclassified 1527
256
183
180
101
many 101
94
many 69
many 67
62
1 2 3 4 5 6 7 8 9 10 ...
Difficulty LevelNumber of positions
Difficult 1705
Intermediate 1493
Easy 1045
1
TaskNumber of positions
White begins and wins 2282
Black begins and wins 707
Mate in 2 483
White begins and draws 438
Mate in 3 99
Black begins and draws 85
Mate in 4 33
Mate in 5 27
Black begins, white wins 19
Mate in 6 16
1 2 3
OriginNumber of positions
Game 1784
Study 978
Example 698
Problem 688
Unclassified 95
1
Collection TypeNumber of collections
Typical Filter 19
Selection of positions 19
Special Filter 13

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