MESON Chess Problem Database

Problem Display
PID: 245020 (8/8/8/4p3/4p3/4K2P/7k/5QN1 w - - 0 1)

Belik, Nikolai Ivanovich

Smena (Moscow), 1989

8/8/8/4p3/4p3/4K2P/7k/5QN1

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh1
      • 2.Sf3#
    • 1...Kg3
      • 2.Qf2#
  • Tries
    • 1.Ke2?
      • 1...Kh1
        • 2.Sf3#
      • 1...Kg3
        • 2.Qf2#
      • 1...e3!
    • 1.Kf2?
      • threat
        • 2.Qg2#
      • 1...Kh1
        • 2.Sf3#
        • 2.Qg2#
      • 1...e3+!
    • 1.Kxe4?
      • 1...Kh1
        • 2.Sf3#
      • 1...Kg3!
  • Keys
    • 1.h4!
      • 1...Kh1
        • 2.Sf3#
      • 1...Kg3
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(A)+S(B)
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR(A)+S(B)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR1(A)
      • Refutation
        • P(b);CHECK
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(A)+S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);P-FLIGHT::QAR(A)+S(B)
      • K(a);S_FLIGHT::QAR1(A)
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