MESON Chess Problem Database

Problem Display
PID: 213225 (3k4/5B2/5n2/3N1QN1/8/8/8/4K3 w - - 0 1)

Uppstrom, Rolf

Land og Folk, 1975

3k4/5B2/5n2/3N1QN1/8/8/8/4K3

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qe6?
      • 1...Sd7
        • 2.Qe8#
      • 1...Se4
        • 2.Qe8#
      • 1...Sg4
        • 2.Qe8#
      • 1...Sh5
        • 2.Qe8#
      • 1...Sh7
        • 2.Qe8#
      • 1...Se8
        • 2.Qxe8#
      • 1...Sg8
        • 2.Qe8#
      • 1...Sxd5!
    • 1.Qe5?
      • threat
        • 2.Qc7#
      • 1...Kd7
        • 2.Qc7#
      • 1...Kc8
        • 2.Qc7#
      • 1...Se8
        • 2.Qxe8#
      • 1...Sxd5!
  • Keys
    • 1.Be8!
      • 1...Kxe8
        • 2.Qc8#
      • 1...Sxd5
        • 2.Qd7#
      • 1...Sxe8
        • 2.Sf7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Se4
        • 2.Qd7#
      • 1...Sg4
        • 2.Qd7#
      • 1...Sh5
        • 2.Qd7#
      • 1...Sh7
        • 2.Qd7#
      • 1...Sg8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
      • Refutation
        • S(a);XS(B)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • S(a);N_GUARD::QAR1(C),XS(a)
      • Refutation
        • S(a);XS(B)
  • Actual
    • B(E);
    • Vars
      • K(b);P-FLIGHT,XB(E)::QAR2(C)
      • S(a);N_GUARD,XS(B)::QAR1(C)
      • S(a);SBLOCK,XB(E)::S(D)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
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