MESON Chess Problem Database

Problem Display
PID: 12423 (6K1/8/7p/3N3k/5Q2/8/6P1/b7 w - - 0 1)

Dittrich, Stefan

Die Schwalbe, 1979

6K1/8/7p/3N3k/5Q2/8/6P1/b7

#2

4 + 3

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2007
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qg4#
  • Tries
    • 1.Qh4+?
      • 1...Kg6
        • 2.Se7#
        • 2.Qg4#
      • 1...Kxh4!
    • 1.g3?
      • threat
        • 2.Qf5#
      • 1...Kg6
        • 2.Qg4#
      • 1...Bf6!
    • 1.g4+?
      • 1...Kg6
        • 2.Se7#
        • 2.Qf5#
      • 1...Kh4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qg4#
      • 1...Kg6
        • 2.Qf5#

Anticipated by 241994(1933)

This anticipates 15720(1987), 56643(1997-1998)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • P(A);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • B(a);
    • Try
      • P(A);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
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