ELO: 1400–1900
0 reviews

Two Knights Save the Day: A World Champion’s Favorite Studies
Sergei Tkachenko
The puzzles are very well selected. The chapters are organized by themes, and each puzzle receives a rating according to its difficulty level, ranging from 1 star (easiest) to 5 stars (most difficult, but solvable).
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ELO: 1400–1900
0 reviews

Sergei Tkachenko
ELO: 1400–1900
0 reviews

Sergei Tkachenko
ELO: 1400–1900
0 reviews

Sergei Tkachenko
ELO: 1900–2200+
0 reviews

Sergei Tkachenko
ELO: 1900–2200+
0 reviews

Galina Satonina
ELO: 1400–1900
0 reviews

Sally Landau
ELO: 800–1500
0 reviews

Anastasiya Geller
ELO: 1400–1900
0 reviews

Sergei Tkachenko