MESON Chess Problem Database

Problem Display
PID: 218508 (7R/7b/2Q5/5P2/1B4k1/3PP3/5K1n/8 w - - 0 1)

Seymour, Robert Hoe

Cincinnati Commercial, 1881

7R/7b/2Q5/5P2/1B4k1/3PP3/5K1n/8

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.Qg2#
    • 1...Bg6
      • 2.Qxg6#
    • 1...Bg8
      • 2.Qg6#
  • Tries
    • 1.Qg2+?
      • 1...Kh4
        • 2.Rxh7#
      • 1...Kh5
        • 2.Rxh7#
      • 1...Kxf5!
    • 1.Qg6+?
      • 1...Kh3
        • 2.Rxh7#
        • 2.Qh5#
        • 2.Qg3#
      • 1...Kh4
        • 2.Rxh7#
      • 1...Bxg6!
  • Keys
    • 1.Be7!
      • 1...Kh3
        • 2.Qg2#
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kh5
        • 2.Qg6#
      • 1...Bxf5
        • 2.Rh4#
        • 2.Qg2#
      • 1...Bg6
        • 2.Qe4#
        • 2.Qxg6#
      • 1...Bg8
        • 2.Qe4#
        • 2.Qg6#
      • 1...Sf1
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(c);SBLOCK,XP(E)::QAR2(F)
    • B(c);N_GUARD::QAR2(F),XB(c)
    • B(c);N_GUARD::QAR2(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINB(c)::R(G),XB(c)
        • K(b);P_SPINB(c),S_FLIGHT::R(G),XB(c)
      • Refutation
        • K(b);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINB(c)::R(G),XB(c)
      • Refutation
        • B(c);XQ(F)
  • Actual
    • B(D);
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT::QAB1(F)
      • K(b);S_FLIGHT,XP(E)::QAB1(F)
      • S(a);N_GUARD::QAB1(F)
      • S(a);N_GUARD::QAB1(F),XS(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).