MESON Chess Problem Database

Problem Display
PID: 24123 (4k3/4P2b/4Q3/4K3/8/8/8/4R3 w - - 0 1)

Lipton, Michael

The Problemist, 1992

4k3/4P2b/4Q3/4K3/8/8/8/4R3

#2

4 + 2

2786 More Fun with Chess Miniatures 2000
145 StrateGems 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qc8#
        • 2.Qc6#
      • 1...Be4
        • 2.Qc8#
      • 1...Bf5!
    • 1.Rg1?
      • 1...Bb1
        • 2.Rg8#
      • 1...Bc2
        • 2.Rg8#
      • 1...Bd3
        • 2.Rg8#
      • 1...Be4
        • 2.Rg8#
      • 1...Bf5
        • 2.Rg8#
      • 1...Bg8
        • 2.Rxg8#
      • 1...Bg6!
    • 1.Rh1?
      • 1...Bb1
        • 2.Rh8#
      • 1...Bc2
        • 2.Rh8#
      • 1...Bd3
        • 2.Rh8#
      • 1...Be4
        • 2.Rh8#
      • 1...Bf5
        • 2.Rh8#
      • 1...Bg6
        • 2.Rh8#
      • 1...Bg8!
    • 1.Qd7+?
      • 1...Kf7
        • 2.e8Q#
      • 1...Kxd7!
    • 1.Qf7+?
      • 1...Kd7
        • 2.e8Q#
      • 1...Kxf7!
  • Keys
    • 1.Kd6!
      • 1...Bb1
        • 2.Qg8#
      • 1...Bc2
        • 2.Qg8#
      • 1...Bd3
        • 2.Qg8#
      • 1...Be4
        • 2.Qg8#
      • 1...Bf5
        • 2.Qg8#
      • 1...Bg6
        • 2.Qg8#
        • 2.Qxg6#
      • 1...Bg8
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR2(C)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Vars
        • B(a);N_GUARD::R(A)
        • B(a);N_GUARD::R(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Vars
        • B(a);OGATE::R(A)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • B(a);N_GUARD::QAR2(C)
      • B(a);N_GUARD::QAR2(C),XB(a)
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