MESON Chess Problem Database

Problem Display
PID: 157653 (8/1K2k3/4P3/4R3/4N3/8/8/6Q1 w - - 0 1)

Murashev, Pavel Aleksandrovich

Kudesnik, 2007

8/1K2k3/4P3/4R3/4N3/8/8/6Q1

#2

5 + 1

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kd8
        • 2.e7#
      • 1...Kf8!
    • 1.Qf2?
      • 1...Kd8
        • 2.Qf8#
      • 1...Ke8!
    • 1.Qc5+?
      • 1...Kd8
        • 2.Qf8#
      • 1...Ke8!
    • 1.Qf1?
      • 1...Kd8
        • 2.Qf8#
      • 1...Ke8!
    • 1.Qg6?
      • 1...Kf8
        • 2.Qf7#
        • 2.e7#
      • 1...Kd8!
    • 1.Qg7+?
      • 1...Kd8
        • 2.Qf8#
        • 2.Qd7#
      • 1...Ke8!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kd8
        • 2.Qg5#
      • 1...Kf8
        • 2.e7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
        • K(a);OGATE,S_FLIGHT::P(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);OGATE,S_FLIGHT::P(D)
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