MESON Chess Problem Database

Problem Display
PID: 230139 (2R5/6Q1/3P4/2N1R2p/2k5/3p4/K2p4/8 w - - 0 1)

Karin, Aleksey

Zadachi i Etyudi, 2000

2R5/6Q1/3P4/2N1R2p/2k5/3p4/K2p4/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sb3#
      • 2.Se6#
  • Tries
    • 1.Ka3?
      • threat
        • 2.Sb3#
        • 2.Se6#
      • 1...Kc3
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd4
        • 2.Sb3#
        • 2.Se6#
      • 1...Kb5!
    • 1.Sd7+?
      • 1...Kd4
        • 2.Qg1#
      • 1...Kb4!
    • 1.Re4+?
      • 1...Kd5
        • 2.Rd4#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kb5!
    • 1.Qb7?
      • threat
        • 2.Sb3#
        • 2.Se6#
      • 1...Kc3
        • 2.Sb3#
        • 2.Se6#
      • 1...Kd4!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Sa6#
      • 1...Kc3
        • 2.Sa6#
      • 1...Kb4
        • 2.Sxd3#
      • 1...Kd4
        • 2.Sd7#
      • 1...Kb5
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • R(F)+S(B)
    • Vars
      • K(c);P-FLIGHT::R(F)+S(B)
      • K(c);P-FLIGHT::S(B),XP(b)
      • K(c);P-FLIGHT::QAB(E)+S(B)
      • K(c);S_FLIGHT::R(C)+S(B),XP(b)
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