MESON Chess Problem Database

Problem Display
PID: 27328 (8/8/7B/3K4/8/R3Pp2/Q2Pkp2/R2n1b2 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/8/7B/3K4/8/R3Pp2/Q2Pkp2/R2n1b2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe3+
      • 2.Rxe3#
      • 2.dxe3#
  • Tries
    • 1.d3+?
      • 1...Sb2
        • 2.Qxb2#
      • 1...Ke1!
    • 1.d4+?
      • 1...Sb2
        • 2.Qxb2#
      • 1...Ke1!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxd1#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Sxe3+
        • 2.Rxe3#
        • 2.dxe3#
      • 1...Ke1
        • 2.Qxd1#
      • 1...Sb2
        • 2.d3#
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(a)
    • Try
      • P(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR(B),XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(a)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XS(a)
    • Vars
      • S(a);CHECK,OGATE::QAR(B)+P(C),XS(a)
      • K(c);P-FLIGHT,P_SPINS(a)::QAR1(B),XS(a)
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