MESON Chess Problem Database

Problem Display
PID: 197718 (6n1/8/P1Np4/1Qpk1P2/p7/K2P3p/8/8 w - - 0 1)

van Eelde, Antonie Clarus Johannes

Haagsche Courant, 1900

6n1/8/P1Np4/1Qpk1P2/p7/K2P3p/8/8

#2

6 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qxa4?
      • threat
        • 2.Qe4#
      • 1...c4
        • 2.Qb5#
        • 2.Qxc4#
      • 1...Sf6!
    • 1.Qb1?
      • threat
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qb7#
      • 1...c4
        • 2.Qb5#
      • 1...Sf6!
    • 1.Qb3+?
      • 1...Kxc6
        • 2.Qb7#
      • 1...c4
        • 2.Qxc4#
        • 2.Qb5#
      • 1...axb3!
  • Keys
    • 1.Qb2!
      • 1...Kxc6
        • 2.Qb7#
      • 1...c4
        • 2.Qb5#
      • 1...Sf6
        • 2.Se7#
      • 1...Sh6
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...h2
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINP(c),XP(b)
      • Threat
        • QAB1(C)
      • Refutation
        • S(f);
    • Try
      • Q(C);N_PINP(c)
      • Threat
        • QAB(C)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
        • P(c);OGATEB::QAR2(C)
      • Refutation
        • S(f);
    • Try
      • Q(C);CHECK,N_PINP(c)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • Refutation
        • P(b);XQ(C)
  • Actual
    • Q(C);N_PINP(c)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB1(C)
      • P(c);OGATEB::QAR2(C)
      • S(f);N_GUARD::S(F)
      • S(f);N_GUARD::S(F),XS(f)
      • P(a);N_GUARD::QAB(C)
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