MESON Chess Problem Database

Problem Display
PID: 149207 (1K2N3/8/8/1p1k4/6Q1/1N6/8/8 w - - 0 1)

Dehler, Ernst Georg

Deutsche Schachzeitung, 1924

1K2N3/8/8/1p1k4/6Q1/1N6/8/8

#2

4 + 2

15148 Sadier Collection 2013
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qe6#
  • Tries
    • 1.Sc7+?
      • 1...Kc6
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Ke5!
    • 1.Qe2?
      • 1...Kc6
        • 2.Qe6#
      • 1...b4!
    • 1.Qf5+?
      • 1...Kc6
        • 2.Qe6#
      • 1...Kc4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Sa5#
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc6
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#

Anticipated by 194216(1917)

This anticipates 160175(1927)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR2(B)
      • K(b);P-FLIGHT::QAR1(B)
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