MESON Chess Problem Database

Problem Display
PID: 259247 (8/3N4/8/8/2PkP3/8/3K4/7Q w - - 0 1)

Camponovo, Elios

Schweizerische Schachzeitung, 1945

8/3N4/8/8/2PkP3/8/3K4/7Q

#2

5 + 1

5454 Near Snap 2022
3713 Snap 2022
6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1+?
      • 1...Kxc4
        • 2.Qa4#
      • 1...Kxe4!
    • 1.Qg1+?
      • 1...Kxe4
        • 2.Qg4#
      • 1...Kxc4!
    • 1.Qh3?
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qg4#
      • 1...Kxc4!
    • 1.Qh5?
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qg4#
      • 1...Kxc4!
  • Keys
    • 1.Qd1!
      • 1...Kxc4
        • 2.Qa4#
      • 1...Kxe4
        • 2.Qg4#

This anticipates 11706(1971), 11951(1973), 168587(2000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(C)::QAR2(A)
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
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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).