MESON Chess Problem Database

Problem Display
PID: 27867 (Q7/8/K7/8/3ppp2/4kp2/3RN3/4B3 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

Q7/8/K7/8/3ppp2/4kp2/3RN3/4B3

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qa7#
  • Tries
    • 1.Sc1?
      • 1...d3
        • 2.Qa7#
      • 1...f2!
    • 1.Sg1?
      • 1...d3
        • 2.Qa7#
      • 1...f2!
    • 1.Sg3?
      • threat
        • 2.Sf1#
        • 2.Sf5#
        • 2.Qxe4#
      • 1...f2
        • 2.Qxe4#
      • 1...d3
        • 2.Sf5#
        • 2.Qxe4#
        • 2.Qa7#
      • 1...fxg3!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sd1#
        • 2.Sd5#
        • 2.Qxe4#
      • 1...dxc3
        • 2.Qa7#
      • 1...f2
        • 2.Qxe4#
      • 1...d3
        • 2.Qxe4#
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAB(E)
  • Tries
    • Try
      • S(C);
      • Vars
        • P(c);OGATEB::QAB(E)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Vars
        • P(c);OGATEB::QAB(E)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAR1(E),XP(d)
      • Refutation
        • P(e);XS(C)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(c);OGATEB,XS(C)::QAB(E)
      • P(b);::QAR1(E),XP(d)
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