MESON Chess Problem Database

Problem Display
PID: 15361 (1Q6/3R4/8/5kP1/5P2/4K3/4N3/8 w - - 0 1)

Podushkin, S

4/5 HM., Vecherni Kharkov, 1982

1Q6/3R4/8/5kP1/5P2/4K3/4N3/8

#2

6 + 1

3296 Shakhmatny zadachi miniaturi 1987
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3+?
      • 1...Ke6
        • 2.Qd6#
        • 2.Qe8#
      • 1...Kg6
        • 2.Qd6#
        • 2.Qb1#
        • 2.Qb6#
        • 2.Qe8#
        • 2.Qg8#
      • 1...Kg4!
    • 1.Sd4+?
      • 1...Kg6
        • 2.Qe8#
      • 1...Kg4!
    • 1.Rg7?
      • threat
        • 2.Qc8#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kg4!
    • 1.Qb3?
      • 1...Kg6
        • 2.Qf7#
      • 1...Kg4!
    • 1.Qc8?
      • threat
        • 2.Rd6#
        • 2.Rg7#
      • 1...Kg4
        • 2.Rh7#
      • 1...Ke6
        • 2.Sd4#
      • 1...Kg6!
    • 1.Qf8+?
      • 1...Ke6
        • 2.Rd6#
        • 2.Qf7#
      • 1...Kg6
        • 2.Qf7#
      • 1...Kg4!
    • 1.Qh8?
      • 1...Ke6
        • 2.Qh3#
      • 1...Kg6
        • 2.Qh7#
      • 1...Kg4!
  • Keys
    • 1.Rh7!
      • 1...Kg4
        • 2.Qc8#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kg6
        • 2.Qb1#

This anticipates 150326(1989)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • QAB(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAB(F)+R(E)
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);S_FLIGHT::QAR1(F)
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