MESON Chess Problem Database

Problem Display
PID: 137702 (5Q2/2N5/K7/8/k7/8/1p1N4/2b5 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2010

5Q2/2N5/K7/8/k7/8/1p1N4/2b5

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sc3#
        • 2.Sb6#
        • 2.Qb4#
      • 1...b1Q
        • 2.Sc3#
      • 1...b1S
        • 2.Sb6#
        • 2.Qb4#
      • 1...b1R
        • 2.Sc3#
      • 1...Bxd2!
    • 1.Qf5?
      • threat
        • 2.Qa5#
      • 1...Ka3
        • 2.Qa5#
      • 1...Kb4
        • 2.Qa5#
      • 1...Bxd2!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc3#
        • 2.Qa3#
        • 2.Qf4#
      • 1...Bxd2
        • 2.Qa3#
      • 1...b1Q
        • 2.Sc3#
      • 1...b1S
        • 2.Qf4#
      • 1...b1B
        • 2.Sc3#
      • 1...b1R
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::S(C)
      • Refutation
        • B(a);XS(A)
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(c);P-FLIGHT::QAR2(D)
        • K(c);P-FLIGHT::QAB1(D)
      • Refutation
        • B(a);XS(A)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • B(a);XS(A)::QAR1(D)
      • P(b);::S(C)
      • P(b);::QAR(D)
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