MESON Chess Problem Database

Problem Display
PID: 153148 (8/n7/5Q2/N2k4/N7/5K2/3P4/8 w - - 0 1)

Lincoln, Robert A

Sp. HM., Dashkovsky-JT, 2010

8/n7/5Q2/N2k4/N7/5K2/3P4/8

#2

5 + 2

145 StrateGems 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • threat
        • 2.Se3#
        • 2.Scb6#
      • 1...Sc8
        • 2.Se3#
      • 1...Kxc4!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qd6#
      • 1...Kxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.Sc3#
        • 2.Sb6#
        • 2.Qe5#
      • 1...Sb5
        • 2.Sb6#
        • 2.Qe5#
      • 1...Sc6
        • 2.Sc3#
        • 2.Sb6#
      • 1...Sc8
        • 2.Sc3#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::S(D)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
  • Actual
    • P(A);
    • Threat
      • DUALS(3)
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