MESON Chess Problem Database

Problem Display
PID: 228783 (1K6/8/R7/pkN5/8/5p2/Q7/8 w - - 0 1)

Lokker, Miklosh S

Deutsche Schachzeitung, 1974

1K6/8/R7/pkN5/8/5p2/Q7/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7?
      • threat
        • 2.Rb6#
      • 1...Kxa6
        • 2.Qc4#
      • 1...a4
        • 2.Qxa4#
      • 1...Kb4!
    • 1.Rc6?
      • threat
        • 2.Qa4#
      • 1...Kb4
        • 2.Qb3#
      • 1...a4
        • 2.Qxa4#
      • 1...Kxc6!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Rb6#
      • 1...Kb4
        • 2.Rb6#
      • 1...Kxa6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT,XR(C)::QAB(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
  • Actual
    • S(B);
    • Threat
      • R1(C)
    • Vars
      • K(c);P-FLIGHT::R(C)
      • K(c);S_FLIGHT,XR(C)::QAB(A)
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