MESON Chess Problem Database

Problem Display
PID: 175739 (2N5/8/2Q1p3/3p4/3k2P1/3P4/4P1N1/K7 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1898

2N5/8/2Q1p3/3p4/3k2P1/3P4/4P1N1/K7

#2

7 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • 1...e5
        • 2.Sb5#
        • 2.Sf5#
      • 1...Ke5!
    • 1.Sa7?
      • 1...e5
        • 2.Sb5#
      • 1...Ke5!
    • 1.Se7?
      • 1...e5
        • 2.Sf5#
      • 1...Ke5!
    • 1.Qa4+?
      • 1...Kc5
        • 2.d4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kc3!
    • 1.Qb5?
      • 1...Kc3
        • 2.Qb2#
      • 1...e5
        • 2.Qb4#
      • 1...Ke5!
    • 1.Qc1?
      • 1...Ke5
        • 2.Qf4#
      • 1...e5!
    • 1.Qc2?
      • 1...e5
        • 2.e3#
      • 1...Ke5!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qf4#
      • 1...dxc4!
    • 1.Qb6+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke5!
    • 1.Qd6?
      • 1...e5
        • 2.Qb4#
      • 1...Kc3!
    • 1.Qxe6?
      • 1...Kc5
        • 2.Qb6#
      • 1...Kc3!
  • Keys
    • 1.Qb7!
      • 1...Kc3
        • 2.Qb2#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qg7#
      • 1...e5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • P(c);SBLOCK::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • P(c);N_GUARD,SBLOCK::S(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::P(D)
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • P(c);SBLOCK::QAR2(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • P(c);
    • Try
      • Q(F);
      • Vars
        • P(c);SBLOCK::P(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • P(b);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);P_PINP(b)
      • Vars
        • P(c);SBLOCK::QAR2(F)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(F);XP(c)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::QAB(F)
      • P(c);SBLOCK::QAR2(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).