MESON Chess Problem Database

Problem Display
PID: 245944 (8/8/B7/4k3/4N3/5K1Q/8/8 w - - 0 1)

Kopyl, Valery Volodimirovich

Problemist Ukraini, 2013

8/8/B7/4k3/4N3/5K1Q/8/8

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kxf5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kxe6!
    • 1.Qc8?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5!
    • 1.Qg3+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf5
        • 2.Bc8#
      • 1...Ke6!
    • 1.Qh5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Ke6!
  • Keys
    • 1.Qh6!
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(B)
        • K(a);OGATE,P-FLIGHT::QAR1(B)
        • K(a);P-FLIGHT::B(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • K(a);P-FLIGHT::QAR1(B)
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