MESON Chess Problem Database

Problem Display
PID: 146967 (6k1/3B3n/4P2Q/8/8/8/8/5K2 w - - 0 1)

Lincoln, Robert A

StrateGems, 2012

6k1/3B3n/4P2Q/8/8/8/8/5K2

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8!
    • 1.Qxh7+?
      • 1...Kf8
        • 2.Qf7#
        • 2.e7#
      • 1...Kxh7!
  • Keys
    • 1.e7!
      • 1...Kf7
        • 2.e8Q#
      • 1...Kh8
        • 2.e8Q#
        • 2.e8R#
      • 1...Sg5
        • 2.e8Q#
      • 1...Sf6
        • 2.Be6#
      • 1...Sf8
        • 2.exf8Q#
        • 2.exf8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,XS(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • P(B);
    • Vars
      • K(b);S_FLIGHT::P=Q
      • K(b);P-FLIGHT,P_SPINS(a)::P=Q
      • S(a);N_GUARD::P=Q
      • S(a);::B(D)
      • S(a);OGATE::PXS(a)=Q
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