MESON Chess Problem Database

Problem Display
PID: 112963 (3Q4/5R2/3Nkn2/5n1P/5p2/3K1N2/8/8 w - - 0 1)

Rummels, Fricis

Austrums, 1897

3Q4/5R2/3Nkn2/5n1P/5p2/3K1N2/8/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qd7#
  • Tries
    • 1.Sg5+?
      • 1...Ke5
        • 2.Sc4#
      • 1...Kd5!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Rxf6#
      • 1...Kxf5
        • 2.Qd7#
        • 2.Qc8#
      • 1...Kxf7
        • 2.Sg5#
      • 1...Sxh5
        • 2.Qd7#
      • 1...Se4
        • 2.Qd7#
      • 1...Sg4
        • 2.Qd7#
      • 1...Sd5
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Sh7
        • 2.Qd7#
      • 1...Se8
        • 2.Qd7#
      • 1...Sg8
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,SBLOCK::QAB1(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::S(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);XS(b)
    • Threat
      • R1(E),XS(d)
    • Vars
      • K(c);S_FLIGHT,XR(E)::S(B)
      • S(d);N_GUARD,XP(C)::QAB1(F)
      • S(d);N_GUARD::QAB1(F)
      • S(d);N_GUARD::QAB1(F),XS(d)
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