MESON Chess Problem Database

Problem Display
PID: 205556 (8/3K4/8/3k4/P4Q2/1P6/8/8 w - - 0 1)

Lazard, Frederic

La Strategie, 1925

8/3K4/8/3k4/P4Q2/1P6/8/8

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd6#
  • Tries
    • 1.Kc7?
      • 1...Kc5
        • 2.Qd6#
        • 2.Qc4#
      • 1...Ke6!
    • 1.Ke7?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kc6!
    • 1.Qf6?
      • 1...Kc5
        • 2.Qd6#
      • 1...Ke4!
  • Keys
    • 1.a5!
      • 1...Kc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
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