MESON Chess Problem Database

Problem Display
PID: 234634 (8/5p2/6n1/2K3Q1/4k2N/8/4P3/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2005

8/5p2/6n1/2K3Q1/4k2N/8/4P3/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sd2#
      • 1...Sf4
        • 2.Qe5#
      • 1...f5!
    • 1.Sxg6?
      • threat
        • 2.Qf4#
        • 2.Qe5#
      • 1...f5
        • 2.Qf4#
        • 2.Qe7#
      • 1...f6
        • 2.Qf4#
      • 1...fxg6!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Qd5#
      • 1...f5
        • 2.Qe3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se5
        • 2.Qf4#
      • 1...Se7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(b);N_GUARD::QAR1(D)
      • Refutation
        • P(c);
    • Try
      • S(B);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(D)
      • Refutation
        • P(c);XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB1(D)
    • Vars
      • P(c);SBLOCK::QAR1(D)
      • S(b);N_GUARD::QAR1(D),XS(b)
      • S(b);N_GUARD::QAR1(D)
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