MESON Chess Problem Database

Problem Display
PID: 158424 (1KQ2RNq/6kP/8/8/8/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

1KQ2RNq/6kP/8/8/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Rf7+?
      • 1...Kg6
        • 2.Qf5#
      • 1...Kxf7!
    • 1.Qf5?
      • threat
        • 2.Rf7#
        • 2.Qf7#
      • 1...Qxh7
        • 2.Qf6#
      • 1...Qxg8!
    • 1.Qa6?
      • threat
        • 2.Qh6#
      • 1...Kxh7
        • 2.Qh6#
      • 1...Qxh7
        • 2.Qf6#
      • 1...Qxg8
        • 2.hxg8Q#
      • 1...Kxf8!
    • 1.Qb7+?
      • 1...Kxf8
        • 2.Qe7#
      • 1...Kg6!
    • 1.Qd7+?
      • 1...Kxf8
        • 2.Qe7#
      • 1...Kg6!
    • 1.Qc6?
      • threat
        • 2.Qh6#
      • 1...Kxh7
        • 2.Qh6#
      • 1...Qxh7
        • 2.Qf6#
      • 1...Qxg8
        • 2.hxg8Q#
      • 1...Kxf8!
    • 1.Qc7+?
      • 1...Kxf8
        • 2.Qe7#
      • 1...Kg6!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Rf7#
        • 2.Qf7#
        • 2.Qh6#
      • 1...Kxh7
        • 2.Qh6#
      • 1...Kxf8
        • 2.Qe7#
      • 1...Qxh7
        • 2.Qf6#
      • 1...Qxg8
        • 2.hxg8Q#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT,XR(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);SBLOCK,XP(A)::QAB1(C)
      • Refutation
        • Q(b);P_PINR(D),XS(E)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT,XP(A)::QAR1(C)
        • Q(b);SBLOCK,XP(A)::QAB1(C)
        • Q(b);OGATE,P_PINR(D),XS(E)::PXQ(b)=Q
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT,XP(A)::QAR1(C)
        • Q(b);SBLOCK,XP(A)::QAB1(C)
        • Q(b);OGATE,P_PINR(D),XS(E)::PXQ(b)=Q
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);P-FLIGHT,XP(A)::QAR1(C)
      • K(a);S_FLIGHT,XR(D)::QAB1(C)
      • Q(b);SBLOCK,XP(A)::QAB1(C)
      • Q(b);OGATE,P_PINR(D),XS(E)::PXQ(b)=Q
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