MESON Chess Problem Database

Problem Display
PID: 146941 (4k1K1/1p6/2P5/B7/4P3/8/8/2Q5 w - - 0 1)

Lincoln, Robert A

StrateGems, 2012

4k1K1/1p6/2P5/B7/4P3/8/8/2Q5

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qd7#
        • 2.Qd8#
      • 1...bxc6
        • 2.Qd8#
      • 1...b6
        • 2.Qd7#
      • 1...Ke7!
    • 1.Qg5?
      • threat
        • 2.Qd8#
        • 2.Qe5#
      • 1...bxc6
        • 2.Qd8#
      • 1...b6!
    • 1.Qh6?
      • threat
        • 2.Qf8#
        • 2.Qe6#
      • 1...bxc6
        • 2.Qe6#
      • 1...b6
        • 2.Qf8#
      • 1...Ke7!
    • 1.Qd1?
      • threat
        • 2.Qd7#
        • 2.Qd8#
      • 1...bxc6
        • 2.Qd8#
      • 1...b6
        • 2.Qd7#
      • 1...Ke7!
    • 1.Qf1?
      • threat
        • 2.Qf7#
        • 2.Qf8#
      • 1...bxc6
        • 2.Qf7#
      • 1...b6
        • 2.Qf8#
      • 1...Ke7!
    • 1.Qc5?
      • threat
        • 2.Qf8#
        • 2.Qe5#
      • 1...b6
        • 2.Qf8#
      • 1...bxc6!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe5#
        • 2.Qf7#
        • 2.Qf8#
      • 1...Ke7
        • 2.Qe5#
      • 1...bxc6
        • 2.Qf7#
      • 1...b6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(D)::QAR1(A)
        • P(a);::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(D)::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(D)::QAR2(A)
        • P(a);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(D)::QAR1(A)
        • P(a);::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(D)::QAB1(A)
        • P(a);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR1(A)
      • Refutation
        • P(a);XP(D)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • P(a);XP(D)::QAB1(A)
      • P(a);::QAR1(A)
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