Double Check

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A Double Check is a X-ray related chess tactic where two pieces deliver check simultaneously, either most often by one direct check in conjunction with a discovered check, or in exceptional rare cases by two discovered checks after an en passant capture. Only king moves may legal in double check evasion, which is usually considered by a special case move generator even if not strictly legal.

See also

• Check Extensions
• Checks and Pinned Pieces (Bitboards)
• Discovered Attack
• Discovered Check
• Double Attack
• Square Attacked By
• Tactics
• X-ray
• X-ray Attacks (Bitboards)

External Links

• Double check from Wikipedia
• Discovered check from Wikipedia

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