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Puzzle

2 • Hellofff •
  1. +M12
  1. Hellofff

Chess

1 • Hellofff •
  1. Chapter 1
  2. Chapter 2
  3. Chapter 3
  1. Hellofff

Hellofff's Study

1 • Hellofff •
  1. Chapter 2
  1. Hellofff

abc

1 • Hellofff •
  1. Wtf is this position
  2. Chapter 2
  3. Chapter 3
  4. Chapter 4
  1. Hellofff

Hellofff

2 • Hellofff •
  1. 1000 centipawn loss
  2. Chapter 2
  3. Chapter 3
  1. Hellofff

Perfect games by stockfish 10

1 • Hellofff •
  1. 1. c4
  2. 1. e4
  1. Hellofff

Hellofff's Study 2

2 • Hellofff •
  1. Chapter 2
  2. A perfect game
  3. Chapter 4
  4. Another perfect game
  1. Hellofff

Hellofff's Study

0 • Hellofff •
  1. Chapter 1
  1. Hellofff