MESON Chess Problem Database

Problem Display
PID: 246066 (8/5k2/2K1NP2/5R2/8/8/8/4Q3 w - - 0 1)

Zinoviev, Nikolai

Sa ogneupory, 1987

8/5k2/2K1NP2/5R2/8/8/8/4Q3

#2

5 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3?
      • 1...Ke8
        • 2.Qg6#
        • 2.Qg8#
      • 1...Kxe6!
    • 1.Qh4?
      • 1...Kg6
        • 2.Qh5#
      • 1...Ke8
        • 2.Qh5#
        • 2.f7#
      • 1...Kg8
        • 2.f7#
      • 1...Kxe6!
    • 1.Qd1?
      • 1...Kxe6
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kg6
        • 2.Qh5#
      • 1...Ke8
        • 2.Qh5#
        • 2.Qd7#
      • 1...Kg8!
    • 1.Qg1?
      • 1...Ke8
        • 2.Qg6#
        • 2.Qg8#
      • 1...Kxe6!
    • 1.Qe2?
      • 1...Kg6
        • 2.Qh5#
      • 1...Ke8
        • 2.Qh5#
      • 1...Kg8!
  • Keys
    • 1.Qh1!
      • 1...Kxe6
        • 2.Qd5#
      • 1...Kg6
        • 2.Qh5#
      • 1...Ke8
        • 2.Qh5#
      • 1...Kg8
        • 2.f7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);OGATE,S_FLIGHT::P(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);OGATE,S_FLIGHT::P(E)
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