MESON Chess Problem Database

Problem Display
PID: 149373 (8/5Q2/5K2/8/6k1/8/6P1/8 w - - 0 1)

Dehler, Ernst Georg

Deutsche Schachzeitung, 1923

8/5Q2/5K2/8/6k1/8/6P1/8

#2

3 + 1

5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Kg6?
      • 1...Kh4
        • 2.Qf4#
      • 1...Kg3!
    • 1.Qd5?
      • threat
        • 2.Qg5#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qg5#
      • 1...Kg3!
    • 1.Qg6+?
      • 1...Kh4
        • 2.Qg5#
      • 1...Kf4!
    • 1.Qg8+?
      • 1...Kh4
        • 2.Qg5#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kf4!
    • 1.Qg7+?
      • 1...Kh4
        • 2.Qg5#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kf4!
  • Keys
    • 1.Qb3!
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qh3#
      • 1...Kh5
        • 2.Qh3#

This anticipates 120860(1937)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAR2(C)
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