MESON Chess Problem Database

Problem Display
PID: 96660 (4Q3/4p2K/8/2R5/4k1N1/8/4N3/8 w - - 0 1)

Riczu, Lajos

Problemas, 1969

4Q3/4p2K/8/2R5/4k1N1/8/4N3/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf3!
    • 1.Qxe7+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kf3!
  • Keys
    • 1.Rc3!
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Qg6#
      • 1...e5
        • 2.Qxe5#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAB1(E)
      • P(b);OGATE::QAR1(E),XP(b)
      • P(b);OGATE::QAR2(E),XP(b)
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