MESON Chess Problem Database

Problem Display
PID: 103633 (2Q5/5p2/1R6/3B4/1N1k4/8/8/3K4 w - - 0 1)

Langier, H

Szachy, 1979

2Q5/5p2/1R6/3B4/1N1k4/8/8/3K4

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Re6?
      • threat
        • 2.Re4#
        • 2.Qc4#
      • 1...f5
        • 2.Qc4#
      • 1...fxe6!
    • 1.Qf5?
      • 1...Kc3
        • 2.Qe5#
        • 2.Qf6#
      • 1...Ke3
        • 2.Sc2#
      • 1...Kc5
        • 2.Qf2#
      • 1...f6!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Ke3!
  • Keys
    • 1.Rf6!
      • 1...Ke3
        • 2.Qc3#
        • 2.Qc5#
      • 1...Ke5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(E)
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::S(B)
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
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