1. Real-Game Mate in Two
Position extracted from tournament game.
Task:
- find forced mate.
Primary purpose:
- tactical training.
Not automatically:
- composed #2.
2. Authored #2
Artificially constructed diagram. Stipulation:
- #2.
Set play, key, defenses, changed mates.
Lesson: composition.
3. Endgame Exercise
R+P vs R theoretical position.
Purpose:
- learn Philidor.
practical endgame theory.
4. Endgame Study
Rook ending constructed around sacrifice/stalemate paradox.
Purpose:
- artistic win/draw.
chess composition.
5. Correct Stipulation Reading
h#2, 2 solutions.
Solver knows:
- Black begins;
- both cooperate;
- both solutions required.
6. Wrong Practical Assumption
Solver tries to stop White mating in h#.
Lesson: wrong objective model.
7. Explicit Twin
b) moves one unit from x to y.
New solution intended.
Not:
- cook.
8. Second Key
Unstated first move also solves.
Lesson: cook.
9. Alternative Continuation After Key
Same defense has two White continuations.
Lesson: dual, not cook.
10. Serious Study Dual
Main artistic line splits into two equivalent White moves and destroys intended paradox.
May be unsound/serious.
11. Tolerated Study Dual
Late technical conversion has equivalent moves.
Lesson: genre nuance.
12. No Solution
Beautiful diagram. No line fulfills task.
Lesson: unsound.
13. Short Solution
#4 can be fulfilled as forbidden short construction.
Lesson: technical defect.
14. Intended Multiple Helpmate Solutions
Three solutions explicitly stated and thematically related.
Lesson: multiplicity can be content.
15. Orthodox Legal Diagram
Retro history exists.
16. Natural-Looking Illegal Diagram
Pawn captures/material make reachability impossible.
Lesson: natural ≠ legal.
17. Castling Convention
No proof rook/king moved.
Current Codex:
- castling presumed permitted unless proved impossible.
18. En-Passant Convention
First move e.p. proposed.
Must prove preceding double pawn step.
Lesson: different presumption.
19. Set Mate
If Black moved in diagram:
- ...a
- A# prepared.
20. Try
1.X? creates thematic play. Only:
- 1...a! refutes.
21. Random Bad Candidate
1.Y? loses to five moves.
Not automatically:
- formal try.
22. Actual Key
1.Z! solves all defenses.
23. Changed Play
Same defense a.
Set:
- A#.
Actual:
- B#.
24. Reciprocal Play
Phase 1:
- a→A, b→B.
Phase 2:
- a→B, b→A.
25. Cyclic Play
a→A, b→B, c→C becomes a→B, b→C, c→A.
26. #2 Threat Problem
Key threatens 2.Q#. Defenses produce thematic alternative mates.
27. #2 Block
No threat. Every Black move damages own defense.
28. #3
Key alone not enough. Second White moves organize final mates.
29. Moremover Mainplan
Desired move fails now.
30. Moremover Foreplan
Preparatory maneuver removes obstacle. Mainplan then succeeds.
Lesson: logical structure.
31. Helpmate Final Picture
Start from model mate. Work backward to legal cooperative routes.
32. Helpmate Move-Order Failure
Correct final placement but one tempo wrong.
No solution in stipulated length.
33. h#1.5
White begins under specialist half-move convention.
Lesson: define notation.
34. Selfmate
White forces Black to mate White.
35. Black Avoids Mate
Black's defense is rational under selfmate stipulation.
36. Reflexmate
Ability to mate can become compulsory under the condition.
Lesson: different rule layer.
37. Study Underpromotion
Queen promotion draws/loses. Knight promotion wins.
38. Study Stalemate
Materially lost side constructs forced stalemate.
39. Study Fortress
Exact draw mechanism.
Not:
- FIDE draw category.
40. Study Mutual Zugzwang
Same diagram:
- White to move loses;
- Black to move loses.
Tempo is the art.
41. Tablebase-Correct Study
WDL confirms main line.
Still requires:
- human artistic evaluation.
42. Tablebase Alternative
Two equivalent wins appear.
Question:
- harmless technical dual?;
- serious thematic dual?
Not solved by WDL alone.
43. Retro Capture Count
Missing units force pawn captures.
44. Retro Promotion
Extra bishop implies promoted pawn route.
45. Last-Move Proof
Only one legal predecessor releases current check.
46. Proof Game Reachability
Diagram reachable in 14 moves.
47. Proof Game Exactness
Stipulation:
- 12.0 moves.
14-move route irrelevant.
48. Proof Game Tempo
One piece must lose exactly two tempi.
49. Fairy Piece Undefined
Diagram includes G.
No definition.
Lesson: invalid editorial presentation for general reader.
50. Grasshopper Defined
Movement/hurdle/capture rules supplied.
Now solvable.
51. Fairy Condition Forgotten
Solver applies ordinary capture. Entire line invalid.
52. Fairy + Retro
Modified rules alter legal history.
Lesson: apply fairy legality first.
53. Grimshaw
Black rook and bishop alternately occupy same critical square. Each interferes with other line.
54. Novotny
White sacrifices on rook/bishop cutting point. Either capture interferes with the other.
55. Plachutta
White sacrifices on cutting point of like-moving black line pieces. Capture creates mutual/overloaded interference.
56. Visual Interference Only
Two lines cross. No formal thematic interference occurs.
Lesson: anti-example.
57. Bristol
Front line piece clears line in same direction for follower.
58. Turton
Critical maneuver creates ordered doubling on same line.
59. Indian
Critical line move followed by white self-interference on critical square.
60. Changed Mates
Same defense, different mate across phases.
61. Zagoruiko
Same defenses show changed continuations across three phases.
62. Le Grand
Threat A / answer B becomes threat B / answer A relative to thematic defense.
63. Dombrovskis
Try threats are refuted by defenses that, in actual play, permit those threatened continuations.
64. Allumwandlung
Q/R/B/N promotions all appear thematically.
65. One Underpromotion
Knight promotion only.
Not:
- AUW.
66. Model Mate
Pure + economical final mating construction.
67. Ideal Mate
All units of both sides function in pure mating construction.
68. Echo Mate
Same mating geometry reappears elsewhere.
69. Chameleon Echo
Echo changes square-colour complex.
70. Minimal but Ugly
Few pieces. Obvious key. No thematic unity.
Lesson: fewest pieces ≠ automatically best.
71. Technical Piece Integrated
Unit prevents cook and also participates in theme.
Higher economy of function.
72. Hard but Empty
Solver needs two hours due to random branching.
Lesson: difficulty ≠ quality.
73. Easy but Elegant
Theme immediately understandable. Perfect economy/unity.
Can still be high art.
74. Database Predecessor
Older similar matrix found.
Need:
- priority/thematic comparison.
75. Database No Hit
Cannot conclude:
- first ever.
76. Popeye Finds Cook
Human construction looked sound. Second key detected.
Lesson: computer testing useful.
77. Game Engine Says +M3
Does not verify:
- helpmate;
- selfmate;
- fairy twin structure.
Lesson: wrong tool.
78. Computer-Tested Problem
Correct.
Judge dislikes:
- key;
- economy;
- originality.
Lesson: correctness ≠ award quality.
79. WCSC Round 1
3 twomovers. 20 minutes.
80. WCSC Study Round
3 studies. 100 minutes.
81. Competitive Twomover Answer
Only key required under current WCSC rule.
82. Competitive Helpmate Answer
All moves required.
83. Extra Incorrect Solution
Solver writes required correct line plus an extra wrong line.
Current scoring can make problem score zero.
Lesson: answer discipline.
84. Electronic Aid
Forbidden in current WCSC/ECSC solving.
85. Composer GM
70 Album points under current composer-title thresholds.
Not:
- OTB GM.
86. Study Album Point
Selected study gives 1.67 composer points under current WFCC snapshot.
87. Joint Composition
Album points divided among composers.
88. Eight Album Sections
#2 / #3 / #n / studies / h# / s# / fairy / retro.
89. WCCI Old Page
Five judges described.
90. WCCI 2026 Decision
2025–27:
- three judges;
- aligned with corresponding Album judging group.
Lesson: later dated decision controls current narrative.
91. WCSC
Solving championship.
92. WCCI
Individual composing.
93. WCCT
Team composing.
94. World Solving Cup
Season/circuit.
Lesson: institutional names matter.
95. PCCC 1956
Created as FIDE composition commission in Budapest.
96. WFCC 2010
Independent organization continues composition governance.
97. Loyd Anecdote
Famous story repeated without source.
Lesson: historical attribution check.
98. Bohemian Example
Model mates central to artistic effect.
99. Logical-School Example
Foreplan explains every preparatory move.
100. Study Corpus
Troitzky/Réti/Rinck/Kasparyan examples selected with provenance and rights.
101. Scraped Anonymous Diagram
Good chess. No composer/source/license.
Reject from a curated public corpus until authorship, source and rights are resolved.
102. Licensed Composition Card
Composer, source, award, solution, rights all preserved.
Ready for responsible publication and study.
103. Tactical Mechanism vs Composition Theme
Novotny uses interference/sacrifice.
Practical tactics describe the underlying mechanism.
Composition terminology describes the formal artistic theme built from it.
104. Practical Mating Pattern vs Composed Mating Play
A mating net from practical play is primarily a chess pattern.
A set/try/changed-mate #2 is an authored formal relationship in composition.
105. Practical Endgame Theory vs Endgame Study
Lucena:
- practical theory.
Constructed rook study:
- artistic composition.
106. Playable Variant vs Fairy Composition
Atomic Chess:
- playable variant.
Circe helpmate:
- fairy condition composition.
107. Full Composition-Literacy Workflow
Read stipulation → legality → phases → solution → soundness → theme → artistry → provenance.
A composition is understood only when both the chess solution and the formal reason for constructing it are visible.
How to Use the 107 Comparisons
Do not memorize these as paired slogans. For each pair, state four things:
- the feature both examples share;
- the condition that separates them;
- the mistake caused by collapsing the distinction;
- a near-position or counterexample that would reverse your answer.
This converts terminology into discrimination skill.
Build Your Own Comparative Library
Whenever you misclassify a problem, preserve the pair that exposed the error: cook vs intended second solution, try vs random wrong move, study vs practical endgame, fairy condition vs theme, line mechanism vs formal theme, verified predecessor vs “database found nothing.” Personal pairs are especially valuable because they target the exact boundary your intuition failed to notice.
The Final Workflow
A mature reading of any composition follows a repeatable order:
stipulation → rules/conventions → legality → phases → complete solution → soundness → theme/mechanism → artistic construction → provenance/priority → reproducible record.
Skipping ahead is the source of many category errors. Artistic admiration cannot establish soundness; software cannot establish originality; and a familiar tactical pattern cannot identify a composition theme until the formal relation is checked.