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2023 Winter Chess Camp

1 • Surrender-at-20 •
  1. Battery - Alekhine's Gun
  2. Harry the h-pawn - #1
  3. Harry the h-pawn - #2
  4. Chapter 4
  1. Surrender-at-20

Surrender-at-20's Study

1 • Surrender-at-20 •
  1. Chapter 1
  1. Surrender-at-20

PS chess club

1 • Surrender-at-20 •
  1. Queen & King vs. a lone King
  2. King & Pawn vs. a lone King
  3. Greco vs Anonymous
  1. Surrender-at-20

2021-08-08 Future Star Puzzles

1 • Surrender-at-20 •
  1. Puzzle 1
  2. Puzzle 2
  3. Puzzle 4
  4. Puzzle 5
  1. Surrender-at-20

Amazing Puzzle Collection

1 • Surrender-at-20 •
  1. Interference (1)
  2. Plot twist (1)
  3. Plot twist (2)
  4. Zugzwang (1)
  1. Surrender-at-20