MESON Chess Problem Database

Problem Display
PID: 181956 (8/5Q2/8/3Np3/3Pk3/8/4K3/8 w - - 0 1)

Armeni, Alberto

Problem Observer, 2014

8/5Q2/8/3Np3/3Pk3/8/4K3/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Qe6#
  • Tries
    • 1.Sb6?
      • 1...Kxd4
        • 2.Qc4#
      • 1...exd4!
    • 1.Se7?
      • 1...exd4
        • 2.Qf5#
      • 1...Kxd4!
    • 1.Qd7?
      • 1...exd4
        • 2.Qe6#
      • 1...Kxd4!
  • Keys
    • 1.Se3!
      • 1...Kxd4
        • 2.Qc4#
      • 1...exd4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,SBLOCK,XP(B)::QAR2(D)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(D)
      • Refutation
        • P(b);XP(B)
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK,XP(B)::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
    • Try
      • Q(D);
      • Vars
        • P(b);OGATEB,SBLOCK,XP(B)::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • S(C);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(B)::QAR1(D)
      • P(b);SBLOCK,XP(B)::QAB1(D)
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