MESON Chess Problem Database

Problem Display
PID: 27213 (8/1p3K2/rp6/Bk1P4/N2P4/2R5/8/Q7 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

8/1p3K2/rp6/Bk1P4/N2P4/2R5/8/Q7

#2

7 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Rb3+?
      • 1...Kxa5
        • 2.Sb2#
        • 2.Sc3#
        • 2.Sc5#
        • 2.Sxb6#
      • 1...Kc4!
    • 1.Qb2+?
      • 1...Kxa4
        • 2.Ra3#
        • 2.Qb4#
      • 1...Kxa5!
    • 1.Qb1+?
      • 1...Kxa4
        • 2.Qb4#
      • 1...Kxa5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qa4#
      • 1...Rxa5
        • 2.Qb2#
        • 2.Qb1#
      • 1...bxa5
        • 2.Qb2#
        • 2.Qb1#
      • 1...bxc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(E)
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • P(c);OGATE,XS(C)::R1(B),XP(c)
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