MESON Chess Problem Database

Problem Display
PID: 246700 (2b4K/2p5/4pp2/b7/1p6/1p6/1k1P1P1Q/R1R5 w - - 0 1)

Petite, Efren

El Ajedrez Espanol, 1962

2b4K/2p5/4pp2/b7/1p6/1p6/1k1P1P1Q/R1R5

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.d3?
      • threat
        • 2.f3#
        • 2.f4#
      • 1...Bb7
        • 2.f3#
      • 1...Bb6!
    • 1.d4?
      • threat
        • 2.f3#
        • 2.f4#
      • 1...Bb7
        • 2.f3#
      • 1...Ba6!
    • 1.f4?
      • threat
        • 2.d3#
        • 2.d4#
      • 1...Bb6
        • 2.d4#
      • 1...Ba6
        • 2.d3#
      • 1...Bb7!
  • Keys
    • 1.f3!
      • threat
        • 2.d3#
        • 2.d4#
      • 1...Bb6
        • 2.d4#
      • 1...Ba6
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(f);N_GUARD::QAB(E)
  • Tries
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);::QAR(E)+P(D)
      • Refutation
        • B(d);
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);::QAR(E)+P(D)
      • Refutation
        • B(h);
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAR(E)+P(C)
        • B(h);::QAR(E)+P(C)
      • Refutation
        • B(h);
  • Actual
    • P(D);
    • Threat
      • DUALS(2)
    • Vars
      • B(d);::QAR(E)+P(C)
      • B(h);::QAR(E)+P(C)
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