MESON Chess Problem Database

Problem Display
PID: 227494 (5K2/1P1k4/1Q6/8/8/8/8/8 w - - 0 1)

Nielsen, Kristian

Aftonbladet, 1926

5K2/1P1k4/1Q6/8/8/8/8/8

#2

3 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5?
      • 1...Kd8
        • 2.Qd6#
        • 2.Qe7#
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qa6?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Qc6+?
      • 1...Kd8
        • 2.Qd6#
        • 2.Qc8#
        • 2.b8Q#
        • 2.b8R#
      • 1...Kxc6!
    • 1.Qg6?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
    • 1.Qh6?
      • 1...Kd8
        • 2.Qd6#
      • 1...Kc7!
  • Keys
    • 1.b8B!
      • 1...Kc8
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
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