Double Check achievement in Fritz - Don't call me a chess bot

Rules of Chess: Check, Mate, and Stalemate

CHAPTER 6 DOUBLE CHECKS INTRODUCTION Diagram 156 - Name the white pieces that can both check the King at the same time on white's next turn.

Discovered Check, Double Check, Checkmate All In One!

Double Checkmate!

DOUBLE CHECK, DISCOVERED CHECK, CHECKMATE, ALL AT ONCE

Triple Double-Check ( The Power of Double-Check ep.2 )

WHY IS DOUBLE CHECK DANGEROUS ?

The game Reti vs. Tartakower 1910 has one of the most powerful double checks ever! Have you ever used a double check to win a game of chess?, By ChessKid.com

Double Check - Learn to Play Chess, Chess Lessons for Beginners

In order to win you should always double check chess design