MESON Chess Problem Database

Problem Display
PID: 217872 (7Q/8/8/8/8/3R4/3B4/K2k4 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1979

7Q/8/8/8/8/3R4/3B4/K2k4

#2

4 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bb4+?
      • 1...Kc1
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qc8#
      • 1...Kc2
        • 2.Qc3#
      • 1...Ke2!
    • 1.Ba5+?
      • 1...Kc1
        • 2.Qb2#
        • 2.Qc3#
        • 2.Qc8#
      • 1...Kc2
        • 2.Qc3#
      • 1...Ke2!
    • 1.Qf6?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kc2!
    • 1.Qh3?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kc2!
    • 1.Qa8?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kc2!
    • 1.Qb8?
      • 1...Kc2
        • 2.Qb1#
        • 2.Qb3#
      • 1...Ke2!
    • 1.Qf8?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kc2!
    • 1.Qg8?
      • 1...Kc2
        • 2.Qb3#
      • 1...Ke2!
  • Keys
    • 1.Qh1+!
      • 1...Kc2
        • 2.Qb1#
      • 1...Ke2
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAB1(D)
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