MESON Chess Problem Database

Problem Display
PID: 227678 (8/8/3K4/8/3kp3/1Q6/2P5/8 w - - 0 1)

Lazard, Frederic

Magyar Sakkvilag, 1926

8/8/3K4/8/3kp3/1Q6/2P5/8

#2

3 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qd3#
      • 2.Qb4#
  • Tries
    • 1.Ke6?
      • 1...e3
        • 2.Qb4#
      • 1...Kc5!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kxe3!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Kc3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qc5#
      • 1...Kc4
        • 2.Qc5#
      • 1...e3
        • 2.Qb4#
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
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