The puzzles in numbers.

Twelve motifs

Puzzles per motif – a puzzle may have several motifs.

1. Mate in 2–313,385
2. Fork10,316
3. Mate in 17,930
4. Discovered attack7,929
5. Decoy6,546
6. Clearance6,269
7. Pin3,636
8. Overloading3,016
9. Deflection2,531
10. Intermezzo2,391
11. Skewer2,382
12. Double check760

Five levels

Puzzles per level, from easy to hard.

1. I · Pupil58,257
2. II · Guardian47,145
3. III · Satrap13,477
4. IV · Vizier8,192
5. V · Shah1,853

The most frequent motifs per level

I · Pupil

Mate in 2–3 · Mate in 1 · Fork · Discovered attack

II · Guardian

Fork · Mate in 2–3 · Discovered attack · Clearance

III · Satrap

Discovered attack · Decoy · Fork · Clearance

IV · Vizier

Decoy · Discovered attack · Pin · Fork

V · Shah

Decoy · Pin · Discovered attack · Clearance

Extras

What else marks a puzzle.

1. Winning material48,211
2. Mate in 4 or more14,450
3. Sacrifice11,612
4. Promotion4,359

Played, missed or side line

1. Played in the game85,299
2. Missed in the game37,125
3. From side lines6,500

Apadana

Puzzles from the games of the players of the Apadana – the player to move.

1. World champions3,088
2. The great before 19501,658
3. Rated 2700 and more11,273

The 15 players with the most puzzles

1. Alexei Shirov241
2. Anatoly Karpov229
3. Garry Kasparov224
4. Mikhail Tal217
5. Michał Krasenkow206
6. Alexander Alekhine193
7. Vasyl Ivanchuk193
8. Viswanathan Anand191
9. David Navara187
10. Hikaru Nakamura177
11. Alexander Beliavsky172
12. Ivan Sokolov171
13. Magnus Carlsen162
14. Viktor Bologan160
15. Shakhriyar Mamedyarov160

ECO

Puzzles per volume of the encyclopaedia of openings.

1. A · Flank openings21,618
2. B · Semi-open games32,054
3. C · Open games, French17,115
4. D · Closed games15,232
5. E · Indian defences15,405

The 15 most frequent ECO codes

1. B22 · Sicilian Defense1,711
2. B07 · Pirc Defense1,469
3. B06 · Modern Defense1,298
4. B33 · Sicilian Defense1,220
5. B01 · Scandinavian Defense932
6. A07 · King's Indian Attack867
7. B12 · Caro-Kann Defense792
8. A30 · English Opening784
9. B90 · Sicilian Defense777
10. A45 · Indian Defense777
11. D02 · Queen's Pawn Game761
12. B23 · Sicilian Defense758
13. B30 · Sicilian Defense743
14. C02 · French Defense741
15. B42 · Sicilian Defense735

Openings

The openings with the most puzzles.

1. Sicilian Defense22,623
2. English Opening7,288
3. King's Indian Defense7,173
4. French Defense6,428
5. Ruy Lopez4,913
6. Queen's Gambit Declined4,330
7. Caro-Kann Defense3,264
8. Nimzo-Indian Defense3,212
9. Pirc Defense2,516
10. Indian Defense2,294
11. Dutch Defense2,263
12. Semi-Slav Defense2,251
13. Benoni Defense2,192
14. Slav Defense2,147
15. Queen's Indian Defense1,995

Treasury

Puzzles per mating pattern.

1. Kiss of death10,531
2. Lolli’s mate1,826
3. Damiano’s mate1,100
4. Max Lange’s mate1,020
5. David and Goliath mate975
6. Anastasia's mate543
7. Cozio’s mate445
8. Back-rank mate404
9. Swallow’s tail mate371
10. Anderssen’s mate319
11. Opera mate319
12. Hook mate287
13. Greco’s mate253
14. Arabian mate246
15. Mayet’s mate191
16. Boden's mate157
17. Pillsbury’s mate146
18. Morphy’s mate122
19. Vuković’s mate109
20. Légal’s mate92
21. Smothered mate86
22. Réti’s mate60
23. Epaulette mate53
24. Corridor mate50
25. Blackburne’s mate26

Games

Puzzles per decade of their game.

1. 1020–10292
2. 1620–162948
3. 1780–17899
4. 1790–17993
5. 1820–18291
6. 1830–183977
7. 1840–184968
8. 1850–1859342
9. 1860–1869170
10. 1870–1879151
11. 1880–1889240
12. 1890–1899357
13. 1900–1909521
14. 1910–1919329
15. 1920–1929583
16. 1930–1939760
17. 1940–1949664
18. 1950–19591,856
19. 1960–19693,572
20. 1970–19795,838
21. 1980–198911,767
22. 1990–199936,655
23. 2000–200928,434
24. 2010–20197,387
25. 2020–20291,708

Length of the solution: the moves to find

1. Moves: 19,930
2. Moves: 245,142
3. Moves: 329,436
4. Moves: 49,656
5. Moves: 55,311
6. Moves: 6 and more2,067