MESON Chess Problem Database

Problem Display
PID: 271454 (1Q6/8/R7/5N2/2kpN3/8/8/1K6 w - - 0 1)

Crisan, Vlaicu

Buletin Problemistic, 1996

1Q6/8/R7/5N2/2kpN3/8/8/1K6

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sfg3?
      • 1...Kd3
        • 2.Qb3#
      • 1...Kd5
        • 2.Qb5#
      • 1...d3!
    • 1.Se7?
      • 1...d3
        • 2.Ra4#
      • 1...Kd3!
    • 1.Rd6?
      • threat
        • 2.Rxd4#
      • 1...d3
        • 2.Se3#
        • 2.Rd4#
      • 1...Kd3!
    • 1.Re6?
      • 1...Kd3
        • 2.Qb5#
      • 1...Kd5
        • 2.Qb3#
      • 1...d3!
    • 1.Qb6?
      • 1...Kd5
        • 2.Qxd4#
        • 2.Qe6#
      • 1...d3
        • 2.Se3#
      • 1...Kd3!
    • 1.Qb7?
      • 1...d3
        • 2.Ra4#
      • 1...Kd3!
  • Keys
    • 1.Qb2!
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qxd4#
      • 1...d3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR2(E)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK::R(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • R1(D),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);
      • Vars
        • P(b);N_GUARD,SBLOCK::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::R(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT::QAR1(E),XP(b)
      • P(b);N_GUARD,SBLOCK::S(C)
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