MESON Chess Problem Database

Problem Display
PID: 213507 (2B1N3/4k3/N7/7Q/7K/8/8/8 w - - 0 1)

Riczu, Lajos

Land og Folk, 1974

2B1N3/4k3/N7/7Q/7K/8/8/8

#2

5 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qf7+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kxf7!
    • 1.Qf5?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kxe8!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kd8
        • 2.Qe8#
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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