MESON Chess Problem Database

Problem Display
PID: 225186 (6K1/8/4Q3/8/2R5/8/k7/8 w - - 0 1)

Ebert, Hilmar

Deutsche Schachzeitung, 1978

6K1/8/4Q3/8/2R5/8/k7/8

#2

3 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rc2+?
      • 1...Ka1
        • 2.Qa2#
        • 2.Qe1#
      • 1...Kb1
        • 2.Qa2#
      • 1...Ka3!
    • 1.Qb6?
      • threat
        • 2.Ra4#
      • 1...Ka1
        • 2.Ra4#
      • 1...Ka3!
  • Keys
    • 1.Rb4+!
      • 1...Ka1
        • 2.Qa6#
      • 1...Ka3
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(A);CHECK
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • K(a);P-FLIGHT::QAR1(B)
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