MESON Chess Problem Database

Problem Display
PID: 227480 (8/8/8/2P5/kNQ5/8/1p6/bK6 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1926

8/8/8/2P5/kNQ5/8/1p6/bK6

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Sc2#
    • 1...Ka5
      • 2.Sc6#
  • Tries
    • 1.Sa2+?
      • 1...Ka3
        • 2.Qb4#
      • 1...Ka5!
    • 1.Sd3+?
      • 1...Ka3
        • 2.Qa2#
        • 2.Qb4#
      • 1...Ka5!
    • 1.Sd5+?
      • 1...Ka3
        • 2.Qa2#
        • 2.Qb4#
      • 1...Ka5!
    • 1.Sa6+?
      • 1...Ka3
        • 2.Qa2#
        • 2.Qb4#
      • 1...Ka5!
    • 1.c6?
      • 1...Ka3
        • 2.Sc2#
      • 1...Ka5!
  • Keys
    • 1.Sc6+!
      • 1...Ka3
        • 2.Qa2#
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(c);P-FLIGHT::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(B);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);P-FLIGHT::S(B)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(B);CHECK
HTML5 logo

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).