MESON Chess Problem Database

Problem Display
PID: 214801 (1Q6/3PK3/8/2rp1bNn/P2k1p2/2b4R/2B5/8 w - - 0 1)

Foster, Benjamin R

St. Louis Globe Democrat, 1877

1Q6/3PK3/8/2rp1bNn/P2k1p2/2b4R/2B5/8

#2

7 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke3!
    • 1.Se6+?
      • 1...Kc4
        • 2.Bb3#
        • 2.Qb3#
      • 1...Bxe6!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Bxd3!
  • Keys
    • 1.Qe5+!
      • 1...Kc4
        • 2.Qxc3#
      • 1...Kxe5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(G)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Refutation
        • B(f);XS(D)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(G)
      • Refutation
        • B(f);XR(B)
  • Actual
    • Q(G);CHECK
    • Vars
      • K(b);OGATE,P-FLIGHT::QAR1(G),XB(a)
      • K(b);S_FLIGHT,XQ(G)::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).