MESON Chess Problem Database

Problem Display
PID: 7584 (7R/8/4K1kb/6P1/8/6Q1/8/8 w - - 0 1)

Arefiev, Yuri

The Problemist, 1991

7R/8/4K1kb/6P1/8/6Q1/8/8

#2

4 + 2

2838 Fun with Chess Miniatures 1996
145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Rxh6#
  • Tries
    • 1.Qh4?
      • threat
        • 2.Qxh6#
      • 1...Kg7
        • 2.Qxh6#
      • 1...Bxg5
        • 2.Rg8#
        • 2.Qh7#
      • 1...Bg7
        • 2.Qh5#
      • 1...Bf8!
    • 1.Qf3?
      • 1...Kg7
        • 2.Qf6#
      • 1...Bxg5
        • 2.Qf7#
      • 1...Bg7
        • 2.Qh5#
        • 2.Qf5#
      • 1...Bf8
        • 2.Qf6#
      • 1...Kxg5!
  • Keys
    • 1.Qf4!
      • 1...Kh5
        • 2.Rxh6#
      • 1...Kg7
        • 2.Qf6#
      • 1...Bxg5
        • 2.Qf7#
      • 1...Bg7
        • 2.Qf5#
      • 1...Bf8
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINB(b),S_FLIGHT::R1(D),XB(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XB(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(A),XB(b)
        • B(b);SBLOCK::QAB1(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • B(b);SBLOCK,XP(B)::QAB1(A)
        • B(b);::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • Q(A);
    • Vars
      • K(a);P_SPINB(b),S_FLIGHT::R1(D),XB(b)
      • K(a);P-FLIGHT::QAB1(A)
      • B(b);SBLOCK,XP(B)::QAB1(A)
      • B(b);SBLOCK::QAB1(A)
      • B(b);::QAR1(A)
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