MESON Chess Problem Database

Problem Display
PID: 11878 (3B4/1Q6/6p1/7k/8/6PN/8/7K w - - 0 1)

Kopenev, V

64 Shakhmatnoe obozrenie, 1973

3B4/1Q6/6p1/7k/8/6PN/8/7K

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
2838 Fun with Chess Miniatures 1996
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7?
      • 1...g5
        • 2.Qxg5#
      • 1...Kg4!
    • 1.g4+?
      • 1...Kh6
        • 2.Bg5#
      • 1...Kxg4!
  • Keys
    • 1.Sg5!
      • 1...Kg4
        • 2.Qf3#
      • 1...Kh6
        • 2.Qh7#

This anticipates 103462(1987), 85365(1991)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • P(b);OGATE::QAR1(D),XP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAR1(D)
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