MESON Chess Problem Database

Problem Display
PID: 245128 (7B/8/2K5/8/4k3/8/Q6N/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Scacchi e Scienze Applicate, 1996

7B/8/2K5/8/4k3/8/Q6N/8

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qc4+?
      • 1...Kf5
        • 2.Qg4#
      • 1...Ke3!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Ke3!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd3!
  • Keys
    • 1.Qe2+!
      • 1...Kf4
        • 2.Qe5#
      • 1...Kf5
        • 2.Qg4#

FEATURES

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