MESON Chess Problem Database

Problem Display
PID: 170505 (8/3n4/3P4/1RPkPK2/3P4/3Q4/8/8 w - - 0 1)

Sutter, Martha

Basler Nachrichten, 1959

8/3n4/3P4/1RPkPK2/3P4/3Q4/8/8

#2

7 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.d5#
    • 1...Sxc5
      • 2.Rxc5#
  • Tries
    • 1.Qc4+?
      • 1...Kc6
        • 2.d5#
      • 1...Kxc4!
    • 1.Qb3+?
      • 1...Kc6
        • 2.d5#
      • 1...Kxd4!
  • Keys
    • 1.c6+!
      • 1...Kxc6
        • 2.d5#
      • 1...Sc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATE,S_FLIGHT::P(B)
    • S(b);OGATE,P_SPINS(b),XP(D)::R1(C),XS(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::P(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::P(B)
      • Refutation
        • K(a);P-FLIGHT,XP(B)
  • Actual
    • P(D);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT,XP(D)::P(B)
      • S(b);N_GUARD,P_SPINS(b)::R1(C),XS(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).