MESON Chess Problem Database

Problem Display
PID: 207250 (3R1q2/4p1P1/B1rnk3/2ppn1RP/6P1/1K1P4/6Q1/B7 w - - 0 1)

Anonymous

New York Round Table, 1869

3R1q2/4p1P1/B1rnk3/2ppn1RP/6P1/1K1P4/6Q1/B7

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.Qxd5#
    • 1...Sec4
      • 2.Qxd5#
    • 1...Sxg4
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qxd5#
    • 1...Sef7
      • 2.Rg6#
      • 2.Qxd5#
      • 2.gxf8S#
  • Tries
    • 1.Rxe5+?
      • 1...Kf7
        • 2.gxf8Q#
      • 1...Kf6!
  • Keys
    • 1.Qxd5+!
      • 1...Kxd5
        • 2.Bc4#
        • 2.Rxe5#
      • 1...Kf6
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(c);XP(D)::QAB1(B),XP(b)
    • S(c);::QAB1(B),XP(b)
    • S(c);XP(E)::QAB1(B),XP(b)
  • Tries
    • Try
      • R(F);CHECK,XS(c)
      • Vars
        • K(f);S_FLIGHT::PXQ(h)=Q
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(B);CHECK,XP(b)
    • Vars
      • K(f);P-FLIGHT,P_SPINS(c)::R1(F)
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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).