MESON Chess Problem Database

Problem Display
PID: 22757 (4Kn2/Q4N2/8/4N2k/7r/8/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

4Kn2/Q4N2/8/4N2k/7r/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qg5#
        • 2.Qh6#
      • 1...Rg4
        • 2.Qh6#
      • 1...Se6
        • 2.Qh6#
      • 1...Sh7
        • 2.Qh6#
      • 1...Rf4!
    • 1.Qb6?
      • threat
        • 2.Qh6#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Se6!
    • 1.Qa6?
      • threat
        • 2.Qh6#
      • 1...Sg6
        • 2.Qxg6#
      • 1...Se6!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg5#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Se6
        • 2.Qg6#
      • 1...Sh7
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR1(B)
        • S(c);::QAR1(B)
      • Refutation
        • R(a);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(c);N_GUARD::QAB1(B),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(c);N_GUARD::QAB1(B),XS(c)
      • Refutation
        • S(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • R(a);N_GUARD::QAB1(B),XR(a)
      • S(c);N_GUARD::QAB1(B)
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