MESON Chess Problem Database

Problem Display
PID: 174914 (8/1Q2p3/2p1P3/5N2/2k2N2/5P2/1P6/2K5 w - - 0 1)

Havelka, Frantisek

Lucan, 1901

8/1Q2p3/2p1P3/5N2/2k2N2/5P2/1P6/2K5

#2

7 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kc2?
      • 1...c5
        • 2.Qb3#
        • 2.b3#
      • 1...Kc5!
    • 1.Kd2?
      • 1...c5
        • 2.b3#
      • 1...Kc5!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Sd3#
      • 1...Kxb3!
  • Keys
    • 1.Sd3!
      • 1...Kxd3
        • 2.Qa6#
      • 1...Kd5
        • 2.Qb3#
      • 1...c5
        • 2.Se5#

This anticipates 120114(1905)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(b);SBLOCK::P(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(G)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT,XS(D)::QAB(G)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(G)
      • P(b);SBLOCK::S(D)
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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).