MESON Chess Problem Database

Problem Display
PID: 189550 (8/n7/4p1Qb/3kP3/3B2K1/N7/2N1P3/8 w - - 0 1)

Ludanyi, Antal

3rd Prize, Ujsag, 1911

8/n7/4p1Qb/3kP3/3B2K1/N7/2N1P3/8

#2

7 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.e4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Sb4#
        • 2.Qf3#
      • 1...Bd2
        • 2.Qf3#
      • 1...Be3
        • 2.Sb4#
      • 1...Bf8
        • 2.Qf3#
      • 1...Sc6
        • 2.Qf3#
        • 2.e4#
      • 1...Kc6!
    • 1.Qh5?
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6!
    • 1.Qf7?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Sb4#
      • 1...Bf4!
    • 1.Qxh6?
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.Qh1#
      • 1...Kc6!
  • Keys
    • 1.Qh7!
      • 1...Kc6
        • 2.Sb4#
      • 1...Bg5
        • 2.Qh1#
      • 1...Bc1
        • 2.Qh1#
      • 1...Bd2
        • 2.Qh1#
      • 1...Be3
        • 2.Qh1#
      • 1...Bf4
        • 2.Qh1#
      • 1...Bg7
        • 2.Qh1#
      • 1...Bf8
        • 2.Qh1#
      • 1...Sb5
        • 2.Qb7#
      • 1...Sc6
        • 2.e4#
      • 1...Sc8
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::P(B)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAB(G)
        • B(c);::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);P_PINP(b)
      • Threat
        • QAB(G)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(G)
        • K(a);N_SPINP(b),S_FLIGHT::S(A)
      • Refutation
        • B(c);
    • Try
      • Q(G);XB(c)
      • Threat
        • QAB(G)
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::S(A)
      • B(c);OGATE::QAB(G)
      • S(d);N_GUARD::QAB(G)
      • S(d);SBLOCK::P(B)
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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).