MESON Chess Problem Database

Problem Display
PID: 119815 (4nNN1/2p4p/2K5/4Pk2/5p1p/5P2/8/4Q3 w - - 0 1)

Steif, Adolf

Armee Schachzeitung, 1906

4nNN1/2p4p/2K5/4Pk2/5p1p/5P2/8/4Q3

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qxh4?
      • threat
        • 2.Qh5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg7
        • 2.Qf6#
      • 1...h5
        • 2.Qxh5#
      • 1...Kxe5!
    • 1.Qb1+?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kg5!
  • Keys
    • 1.Qa5!
      • threat
        • 2.e6#
      • 1...Kg5
        • 2.e6#
      • 1...Sd6
        • 2.exd6#
      • 1...Sf6
        • 2.exf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);XP(b)
      • Threat
        • QAR2(A)
      • Vars
        • S(f);N_GUARD::QAR1(A),XS(f)
        • S(f);N_GUARD::QAR1(A)
        • P(e);::QAR2(A),XP(e)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+P(C)
    • Vars
      • K(c);P-FLIGHT::QAR(A)+P(C)
      • S(f);OGATE::QAR(A)+P(C),XS(f)
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