MESON Chess Problem Database

Problem Display
PID: 174958 (1n1NN3/3p2Q1/8/2pk4/4p3/1P6/3PP3/4R2K w - - 0 1)

Schiffer, Vincenz

Wiener Schachzeitung, 1901

1n1NN3/3p2Q1/8/2pk4/4p3/1P6/3PP3/4R2K

#2

8 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Sc7#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Sc7#
        • 2.Qd6#
      • 1...c4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd6#
      • 1...d6
        • 2.Sc7#
        • 2.Qxd6#
      • 1...e3!
    • 1.Qg3?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...e3!
    • 1.Qe7?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...e3!
  • Keys
    • 1.d4!
      • threat
        • 2.Qe5#
      • 1...cxd4
        • 2.Qg5#
      • 1...exd4 ep
        • 2.e4#
      • 1...Sc6
        • 2.Qxd7#
      • 1...d6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::S(H)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(F)
        • S(e);::QAR1(F)
      • Refutation
        • P(a);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT::QAR2(F)
        • P(d);::QAR1(F),XP(d)
      • Refutation
        • P(a);
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);P-FLIGHT::QAR2(F)
        • P(d);::QAR1(F),XP(d)
      • Refutation
        • P(a);
  • Actual
    • P(C);
    • Threat
      • QAR1(F)
    • Vars
      • P(b);SBLOCK,XP(C)::QAR(F)
      • P(a);EP,OGATE,XP(C)::P(D)
      • S(e);N_GUARD::QAR2(F),XP(d)
      • P(d);SBLOCK::S(H)
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