MESON Chess Problem Database

Problem Display
PID: 15833 (8/4K3/2Q5/3pp3/3k4/2R5/8/8 w - - 0 1)

Pestunov, Stanislav

Kamchatskaya pravda, 1988

8/4K3/2Q5/3pp3/3k4/2R5/8/8

#2

3 + 3

2838 Fun with Chess Miniatures 1996
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qf6#
  • Tries
    • 1.Kd6?
      • 1...e4
        • 2.Qc5#
      • 1...Ke4!
    • 1.Ke6?
      • 1...e4
        • 2.Qc5#
      • 1...Ke4!
    • 1.Kf6?
      • 1...e4
        • 2.Qc5#
      • 1...Ke4!
    • 1.Kd7?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Kf7?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Kd8?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Ke8?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Kf8?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Ra3?
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Rb3?
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Rf3?
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Rg3?
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Rh3?
      • 1...e4
        • 2.Qc3#
      • 1...Ke4!
    • 1.Qe6?
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qf6#
      • 1...Kxc3!
    • 1.Qg6?
      • threat
        • 2.Qd3#
      • 1...e4
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kxc3!
  • Keys
    • 1.Qc8!
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qh8#

Anticipated by 207023(1861)

This anticipates 103325(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • R(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(c)::QAR2(B)
        • P(c);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • P(c);OGATEB,SBLOCK::QAB(B)
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