MESON Chess Problem Database

Problem Display
PID: 146325 (3Q1Kbk/8/8/3N2N1/6n1/8/8/8 w - - 0 1)

Stojnic, Dragan

The Problemist, 2012

3Q1Kbk/8/8/3N2N1/6n1/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Kxf7#
    • 1...Bh7
      • 2.Sf7#
    • 1...Sf2
      • 2.Qf6#
    • 1...Sh2
      • 2.Qf6#
    • 1...Se3
      • 2.Qf6#
    • 1...Se5
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qf6#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sg6#
      • 1...Bf7
        • 2.Kxf7#
      • 1...Bh7
        • 2.Sf7#
      • 1...Se5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg6#
      • 1...Bf7
        • 2.Kxf7#
      • 1...Bh7
        • 2.Sf7#
      • 1...Se5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • B(b);::QAR(C)+K(D),XB(b)
    • B(b);N_GUARD,SBLOCK::S(B)
    • S(a);N_GUARD::QAB(C)
    • S(a);N_GUARD::QAB(C),XS(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(b);::QAR(C)+K(D),XB(b)
        • B(b);N_GUARD,SBLOCK::S(B)
      • Refutation
        • S(a);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(b);::QAR(C)+K(D),XB(b)
      • B(b);N_GUARD,SBLOCK::S(B)
      • S(a);N_GUARD::QAB(C)
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