MESON Chess Problem Database

Problem Display
PID: 225349 (8/8/6P1/3R4/8/3P1k2/7B/Q3K3 w - - 0 1)

Didenko, Vladimir Vasilovich

Praca, 1994

8/8/6P1/3R4/8/3P1k2/7B/Q3K3

#2

6 + 1

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qe2#
        • 2.Qf2#
      • 1...Kg4!
    • 1.Qe5?
      • threat
        • 2.Qg3#
        • 2.Qe2#
        • 2.Qe4#
      • 1...Kg4
        • 2.Qg3#
        • 2.Qh5#
      • 1...Kg2!
    • 1.Qh8?
      • threat
        • 2.Qh3#
      • 1...Ke3
        • 2.Qh3#
      • 1...Kg4
        • 2.Qh5#
      • 1...Kg2!
    • 1.Qd1+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kg2!
    • 1.Qa2?
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qe2#
        • 2.Qf2#
      • 1...Kg4!
    • 1.Qa4?
      • threat
        • 2.Qe4#
      • 1...Ke3
        • 2.Qe4#
        • 2.Qf4#
      • 1...Kg2!
  • Keys
    • 1.Rh5!
      • 1...Kg2
        • 2.Qa8#
      • 1...Ke3
        • 2.Rh3#
      • 1...Kg4
        • 2.Qd1#

Anticipated by 11952(1973), 914(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAB(A)
      • K(a);P-FLIGHT::R(E)
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