MESON Chess Problem Database

Problem Display
PID: 27308 (4Q3/8/5K2/8/3n4/1N6/6N1/3k1B2 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

4Q3/8/5K2/8/3n4/1N6/6N1/3k1B2

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Be2#
      • 2.Qh5#
      • 2.Qe2#
    • 1...Se2
      • 2.Qxe2#
    • 1...Sf3
      • 2.Qe2#
    • 1...Sb5
      • 2.Qe2#
    • 1...Sf5
      • 2.Qe2#
    • 1...Sc6
      • 2.Qe2#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Qe1#
      • 1...Kc1!
    • 1.Qe4?
      • threat
        • 2.Qb1#
        • 2.Qd3#
      • 1...Sc2
        • 2.Be2#
        • 2.Qd3#
        • 2.Qf3#
        • 2.Qe2#
        • 2.Qg4#
      • 1...Se2
        • 2.Bxe2#
        • 2.Qd3#
        • 2.Qxe2#
      • 1...Sf3
        • 2.Be2#
        • 2.Qb1#
        • 2.Qe2#
      • 1...Sxb3!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qe1#
      • 1...Sc2
        • 2.Be2#
        • 2.Qh5#
        • 2.Qe2#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sf3
        • 2.Qe2#
      • 1...Se6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(b);N_GUARD::QAB1(E),XS(b)
    • S(b);N_GUARD::QAB1(E)
  • Tries
    • Try
      • S(C);XS(b)
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XS(C)
  • Actual
    • B(A);
    • Threat
      • QAR1(E)
    • Vars
      • S(b);N_GUARD::QAB1(E),XS(b)
      • S(b);N_GUARD::QAB1(E)
      • S(b);N_GUARD::QAB(E)
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