MESON Chess Problem Database

Problem Display
PID: 231092 (8/2K5/k7/8/8/8/8/2Q5 w - - 0 1)

L'Hermet, Johann Georg Rudolf

Falkirk Herald, 1927

8/2K5/k7/8/8/8/8/2Q5

#2

2 + 1

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qa3#
      • 2.Qa1#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qa3#
        • 2.Qa1#
      • 1...Ka5
        • 2.Qa3#
      • 1...Ka7!
    • 1.Qb2?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qa1#
        • 2.Qa3#
        • 2.Qa2#
        • 2.Qb7#
      • 1...Ka5!
    • 1.Qd2?
      • 1...Ka7
        • 2.Qa5#
        • 2.Qa2#
      • 1...Kb5!
    • 1.Qb1?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qa2#
        • 2.Qa1#
        • 2.Qb7#
      • 1...Ka5!
    • 1.Qe1?
      • 1...Ka7
        • 2.Qa5#
        • 2.Qa1#
      • 1...Kb5!
    • 1.Qf1+?
      • 1...Ka7
        • 2.Qa1#
      • 1...Ka5!
    • 1.Qc3?
      • 1...Ka7
        • 2.Qa1#
        • 2.Qa5#
        • 2.Qa3#
      • 1...Kb5!
    • 1.Qc4+?
      • 1...Ka7
        • 2.Qa2#
        • 2.Qa4#
      • 1...Ka5!
    • 1.Qc6+?
      • 1...Ka7
        • 2.Qa4#
        • 2.Qb7#
      • 1...Ka5!
  • Keys
    • 1.Qg5!
      • 1...Ka7
        • 2.Qa5#

Anticipated by 80724(1857)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
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