MESON Chess Problem Database

Problem Display
PID: 171463 (8/Q7/6K1/3N4/8/3kB3/3P4/1R6 w - - 0 1)

Antipov, Viacheslav Pavlovich

Magadanskaya Pravda, 1998

8/Q7/6K1/3N4/8/3kB3/3P4/1R6

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd4#
  • Tries
    • 1.Sc3?
      • 1...Kc4
        • 2.Qd4#
        • 2.Qa6#
      • 1...Kc2!
    • 1.Sf4+?
      • 1...Kc2
        • 2.Qa2#
      • 1...Kc4
        • 2.Qd4#
        • 2.Qc5#
        • 2.Qa2#
        • 2.Qa4#
        • 2.Qa6#
        • 2.Qc7#
        • 2.Qf7#
      • 1...Ke4!
    • 1.Qd4+?
      • 1...Kc2
        • 2.Qe4#
      • 1...Ke2!
    • 1.Qb7?
      • 1...Kc2
        • 2.Qb3#
      • 1...Ke2
        • 2.Sf4#
      • 1...Kc4
        • 2.Qb3#
        • 2.Qb5#
      • 1...Ke4!
    • 1.Qd7?
      • 1...Kc2
        • 2.Qf5#
      • 1...Kc4
        • 2.Sb6#
        • 2.Qb5#
      • 1...Ke4
        • 2.Qf5#
      • 1...Ke2!
    • 1.Qe7?
      • 1...Kc2
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Ke2!
  • Keys
    • 1.Qf7!
      • 1...Kc2
        • 2.Qf5#
      • 1...Ke2
        • 2.Qf1#
      • 1...Kc4
        • 2.Sf4#
      • 1...Ke4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(F)
  • Tries
    • Try
      • S(D);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);S_FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::QAB(F)+S(D)
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