MESON Chess Problem Database

Problem Display
PID: 214566 (5K2/7p/4p2p/4P2k/7P/Pp2N3/1P4N1/1QR5 w - - 0 1)

Wormald, Robert Bownas

Cincinnati Commercial, 1880

5K2/7p/4p2p/4P2k/7P/Pp2N3/1P4N1/1QR5

#2

9 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sf6#
      • 1...exd5
        • 2.Qf5#
      • 1...Kg4!
    • 1.Sf5?
      • 1...Kg6
        • 2.Sf4#
        • 2.Sg3#
        • 2.Sg7#
      • 1...exf5
        • 2.Qxf5#
      • 1...Kg4!
    • 1.Rc2?
      • 1...Kg6
        • 2.Sf4#
      • 1...bxc2!
    • 1.Qa2?
      • 1...Kg6
        • 2.Sf4#
      • 1...bxa2!
    • 1.Qg6+?
      • 1...Kxg6
        • 2.Sf4#
      • 1...hxg6!
  • Keys
    • 1.Qa1!
      • 1...Kg6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • P(c);N_GUARD,XS(F)::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);
      • Vars
        • P(c);OGATE,XS(F)::QAR2(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);S_FLIGHT::S(D)
      • Refutation
        • P(a);XR(B)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(D)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XQ(A)::S(D)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::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).