MESON Chess Problem Database

Problem Display
PID: 27238 (2B5/7b/2R3Rn/7k/5Pn1/8/6N1/1K6 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

2B5/7b/2R3Rn/7k/5Pn1/8/6N1/1K6

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg8
      • 2.Rg5#
    • 1...Sf5
      • 2.Rg5#
    • 1...Sf7
      • 2.Bxg4#
    • 1...Sg8
      • 2.Bxg4#
  • Tries
    • 1.Ka1?
      • threat
        • 2.Rg5#
      • 1...Sf7
        • 2.Bxg4#
      • 1...Bxg6!
    • 1.Kc1?
      • threat
        • 2.Rg5#
      • 1...Sf7
        • 2.Bxg4#
      • 1...Bxg6!
    • 1.Kb2?
      • threat
        • 2.Rg5#
      • 1...Sf7
        • 2.Bxg4#
      • 1...Bxg6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Rg5#
      • 1...Bxg6
        • 2.Bxg6#
      • 1...Sf7
        • 2.Bxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(d);N_PINR(E)::R1(E)
    • S(c);N_PINR(E)::R1(E)
    • S(c);N_GUARD::B(F),XS(a)
  • Tries
    • Try
      • K(A);N_SPINR(E),P-FLIGHT
      • Threat
        • R1(E)
      • Vars
        • S(c);N_GUARD::B(F),XS(a)
      • Refutation
        • B(d);XR(E)
    • Try
      • K(A);N_SPINR(E),P-FLIGHT
      • Threat
        • R1(E)
      • Vars
        • S(c);N_GUARD::B(F),XS(a)
      • Refutation
        • B(d);XR(E)
    • Try
      • K(A);N_SPINR(E),P-FLIGHT
      • Threat
        • R1(E)
      • Vars
        • S(c);N_GUARD::B(F),XS(a)
      • Refutation
        • B(d);XR(E)
  • Actual
    • B(F);N_SPINR(E)
    • Threat
      • R1(E)
    • Vars
      • B(d);OGATE,P_PINB(F),XR(E)::B(F),XB(d)
      • S(c);N_GUARD::B(F),XS(a)
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