MESON Chess Problem Database

Problem Display
PID: 238237 (8/1N2p3/3Nk3/7B/4K3/8/2Q5/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

ChessStar, 2015

8/1N2p3/3Nk3/7B/4K3/8/2Q5/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qc8#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qg6#
      • 1...Kd7
        • 2.Qc8#
      • 1...exd6!
    • 1.Kf4?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qe4#
        • 2.Qc4#
      • 1...Kf6
        • 2.Qg6#
      • 1...Kd7
        • 2.Qc8#
      • 1...exd6!
    • 1.Bf7+?
      • 1...Kd7
        • 2.Qc8#
      • 1...Kf6!
    • 1.Qc1?
      • 1...Kf6
        • 2.Qh6#
      • 1...Kd7
        • 2.Qc8#
      • 1...exd6!
    • 1.Qd2?
      • 1...Kf6
        • 2.Qh6#
      • 1...exd6
        • 2.Qxd6#
      • 1...Kd7!
    • 1.Qf2?
      • threat
        • 2.Bg4#
        • 2.Qf5#
      • 1...exd6
        • 2.Qf7#
      • 1...Kd7!
    • 1.Qh2?
      • 1...Kf6
        • 2.Qe5#
      • 1...exd6
        • 2.Qxd6#
      • 1...Kd7!
    • 1.Qc3?
      • threat
        • 2.Bg4#
      • 1...Kd7
        • 2.Qc8#
      • 1...exd6!
    • 1.Qc4+?
      • 1...Kd7
        • 2.Be8#
        • 2.Qc8#
      • 1...Kf6!
    • 1.Qc6?
      • threat
        • 2.Sc4#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sf7#
        • 2.Sc8#
        • 2.Se8#
      • 1...exd6
        • 2.Qxd6#
      • 1...Kf6!
    • 1.Qc7?
      • 1...exd6
        • 2.Qxd6#
        • 2.Qf7#
      • 1...Kf6!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qe5#
      • 1...Kd7
        • 2.Qc8#
      • 1...exd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);XS(D)
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);XS(D)
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(b);OGATE,XS(D)::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XS(D)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • P(b);OGATE,XS(D)::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • B(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(6)
      • Vars
        • P(b);OGATE,P_SPINP(b),XS(D)::QAR1(A),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);OGATE,XS(D)::QAR1(A),XP(b)
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