MESON Chess Problem Database

Problem Display
PID: 238235 (8/1kP5/2N5/8/1NK5/8/8/Q6B w - - 0 1)

Murashev, Pavel Aleksandrovich

ChessStar, 2015

8/1kP5/2N5/8/1NK5/8/8/Q6B

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.Qa7#
  • Tries
    • 1.Qh8?
      • threat
        • 2.Qb8#
      • 1...Kb6
        • 2.Qb8#
      • 1...Kxc7!
    • 1.Qa8+?
      • 1...Kb6
        • 2.Sd5#
        • 2.Qa7#
        • 2.Qb8#
      • 1...Kxa8
        • 2.c8Q#
      • 1...Kxc7!
    • 1.c8Q+?
      • 1...Kb6
        • 2.Sd5#
        • 2.Qd4#
        • 2.Qg1#
        • 2.Qa5#
        • 2.Qaa6#
        • 2.Qa7#
        • 2.Qb8#
      • 1...Kxc8!
    • 1.c8R?
      • threat
        • 2.Qa6#
      • 1...Kb6
        • 2.Qa6#
        • 2.Qa7#
      • 1...Kxc8!
  • Keys
    • 1.Qg7!
      • 1...Kb6
        • 2.c8S#
      • 1...Ka8
        • 2.c8Q#
        • 2.c8R#
      • 1...Kc8
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XQ(A)::P=Q
      • Refutation
        • K(a);P-FLIGHT,XP(F)
    • Try
      • P(F);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(F)
    • Try
      • P(F);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::P=S
      • K(a);S_FLIGHT::P=Q
      • K(a);S_FLIGHT::S(E)
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