MESON Chess Problem Database

Problem Display
PID: 160599 (8/8/8/8/5N1p/5k2/2B4K/2Q4N w - - 0 1)

Lincoln, Robert A

British Chess Magazine, 2014

8/8/8/8/5N1p/5k2/2B4K/2Q4N

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sg2?
      • threat
        • 2.Qd1#
      • 1...Ke2
        • 2.Qd1#
      • 1...Kg4!
    • 1.Sd5?
      • threat
        • 2.Qd1#
      • 1...Ke2
        • 2.Qd1#
      • 1...Kg4!
    • 1.Se6?
      • 1...Ke2
        • 2.Sd4#
      • 1...Kg4
        • 2.Qd1#
      • 1...h3!
    • 1.Qd1+?
      • 1...Ke3
        • 2.Sg2#
        • 2.Sd5#
      • 1...Kxf4!
    • 1.Qf1+?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kg4!
    • 1.Qg1?
      • 1...h3
        • 2.Qg3#
      • 1...Kxf4!
  • Keys
    • 1.Sh3!
      • 1...Ke2
        • 2.Sg1#
      • 1...Kg4
        • 2.Qd1#

FEATURES

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