MESON Chess Problem Database

Problem Display
PID: 228736 (8/n7/5R2/3k4/2p4N/4Q3/8/K7 w - - 0 1)

Lokker, Miklosh S

Deutsche Schachzeitung, 1973

8/n7/5R2/3k4/2p4N/4Q3/8/K7

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...c3
        • 2.Qd4#
      • 1...Sb5
        • 2.Qe5#
      • 1...Sc6!
    • 1.Sg6?
      • threat
        • 2.Sf4#
        • 2.Se7#
        • 2.Qe5#
      • 1...Sc6
        • 2.Sf4#
      • 1...Sc8
        • 2.Sf4#
        • 2.Qe5#
      • 1...c3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
        • 2.Rd6#
        • 2.Qd4#
      • 1...c3
        • 2.Qd4#
      • 1...Sb5
        • 2.Se7#
      • 1...Sc6
        • 2.Rd6#
      • 1...Sc8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR1(B)
        • S(c);::QAR1(B)
      • Refutation
        • S(c);
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(C)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(a);::QAR1(B)
      • S(c);::S(C)
      • S(c);::R1(D)
      • S(c);::QAR1(B)
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