MESON Chess Problem Database

Problem Display
PID: 27340 (8/7N/4pb2/2BPkqP1/3RP3/K2P4/8/5Q2 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/7N/4pb2/2BPkqP1/3RP3/K2P4/8/5Q2

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Qxf6#
    • 1...Qxe4
      • 2.Qxf6#
    • 1...Qg4
      • 2.Qxf6#
    • 1...Qxh7
      • 2.Qxf6#
    • 1...exd5
      • 2.Qxf5#
  • Keys
    • 1.Sf8!
      • threat
        • 2.Sd7#
      • 1...Qxf1
        • 2.Sg6#
      • 1...exd5
        • 2.Rxd5#
        • 2.Qxf5#
      • 1...Qf2
        • 2.Sg6#
      • 1...Qf3
        • 2.Sg6#
      • 1...Qh7
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(b);OGATE,P_PINP(C)::QAB1(A),XB(d)
    • Q(b);OGATE,XP(E)::QAB1(A),XB(d)
    • Q(b);OGATE::QAB1(A),XB(d)
    • Q(b);OGATE,XS(I)::QAB1(A),XB(d)
    • P(c);N_GUARD,XP(G)::QAR1(A),XQ(b)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • Q(b);N_GUARD,XQ(A)::S(I)
      • Q(b);N_GUARD::S(I)
      • Q(b);N_GUARD,P_PINP(C)::S(I)
      • Q(b);OGATE::QAB1(A),XB(d)
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