MESON Chess Problem Database

Problem Display
PID: 50486 (8/1p6/2N1B3/8/5p2/5k2/3Q3K/8 w - - 0 1)

Muller, Dieter

Die Schwalbe TT, 1962

8/1p6/2N1B3/8/5p2/5k2/3Q3K/8

#2

4 + 3

145 StrateGems 2003
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe2#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Bd5#
      • 1...Ke4
        • 2.Qe2#
      • 1...bxc6!
    • 1.Bc4?
      • threat
        • 2.Qe2#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kg4!
    • 1.Bg4+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxg4!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Qe2#
      • 1...Kxf2!
  • Keys
    • 1.Kg1!
      • threat
        • 2.Qd3#
      • 1...Kg3
        • 2.Qf2#
      • 1...Ke4
        • 2.Qe2#

This anticipates 39563(1995)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • B(D)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);XS(C)
    • Try
      • B(D);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR2(A)
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