MESON Chess Problem Database

Problem Display
PID: 197717 (3Q4/8/3P1Pp1/3pk1N1/6K1/8/1P6/8 w - - 0 1)

van Eelde, Antonie Clarus Johannes

Haagsche Courant, 1898

3Q4/8/3P1Pp1/3pk1N1/6K1/8/1P6/8

#2

6 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Ke4!
    • 1.Qb6?
      • 1...Kxf6
        • 2.Qd4#
      • 1...d4!
    • 1.Qc7?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxf6
        • 2.Qe7#
      • 1...d4!
    • 1.Qd7?
      • 1...Kxf6
        • 2.Qe7#
      • 1...d4
        • 2.Qe6#
      • 1...Kd4!
  • Keys
    • 1.Qc8!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kxd6
        • 2.Sf7#
      • 1...Kxf6
        • 2.Qh8#
      • 1...d4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT,XP(E)::QAB(F)
      • Refutation
        • P(a);
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);S_FLIGHT,XP(E)::QAB1(F)
      • Refutation
        • P(a);
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT,XP(E)::QAB1(F)
        • P(a);SBLOCK::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);S_FLIGHT::QAB1(F)
      • K(b);S_FLIGHT,XP(D)::S(C)
      • K(b);OGATEB,S_FLIGHT,XP(E)::QAB(F)
      • P(a);SBLOCK::QAR1(F)
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