MESON Chess Problem Database

Problem Display
PID: 108311 (3k4/7R/8/8/4K3/n7/3p1p2/7Q w - - 0 1)

Froberg, Johan Hilding Laurentius

Springaren, 1987

3k4/7R/8/8/4K3/n7/3p1p2/7Q

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Ke5?
      • threat
        • 2.Qa8#
      • 1...Kc8
        • 2.Qa8#
      • 1...Ke8
        • 2.Qa8#
      • 1...Sc4+!
    • 1.Rf7?
      • threat
        • 2.Qh8#
      • 1...Kc8
        • 2.Qh8#
      • 1...Ke8!
    • 1.Qh4+?
      • 1...Ke8
        • 2.Qe7#
      • 1...Kc8!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qb8#
      • 1...Kc8
        • 2.Qc7#
      • 1...Ke8
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR2(A)
        • K(d);P-FLIGHT::QAR(A)
      • Refutation
        • S(c);CHECK
    • Try
      • R(C);
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • K(d);P-FLIGHT::QAR(A)
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