MESON Chess Problem Database

Problem Display
PID: 6108 (7Q/8/8/7R/8/4Bkp1/2K3N1/8 w - - 0 1)

Kraemer, Wilhelm

Lindgren, Frithiof

Chemnitzer Tageblatt, 1927

7Q/8/8/7R/8/4Bkp1/2K3N1/8

#2

5 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qa8#
  • Tries
    • 1.Rh1?
      • 1...Ke2
        • 2.Qh5#
      • 1...Kxg2
        • 2.Qa8#
      • 1...Kg4
        • 2.Qh5#
      • 1...Ke4!
    • 1.Rf5+?
      • 1...Ke2
        • 2.Qh5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kg4
        • 2.Qh5#
      • 1...Kxg2!
    • 1.Qd4?
      • 1...Ke2
        • 2.Qd1#
      • 1...Kxg2!
    • 1.Qd8?
      • 1...Ke2
        • 2.Qd1#
      • 1...Ke4
        • 2.Qd5#
        • 2.Qa8#
      • 1...Kg4
        • 2.Qd1#
      • 1...Kxg2!
  • Keys
    • 1.Qa1!
      • 1...Ke2
        • 2.Qd1#
      • 1...Kxg2
        • 2.Qh1#
      • 1...Ke4
        • 2.Qa8#
      • 1...Kg4
        • 2.Qd1#

This anticipates 241374(1985)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(E)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT,XS(B)::QAB(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(E)
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(a);S_FLIGHT::QAB(E)
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