MESON Chess Problem Database

Problem Display
PID: 187721 (8/8/2p5/2R5/bk1N4/R7/P4B2/K4B2 w - - 0 1)

Lopez-Rincon, J

The Times, 1909

8/8/2p5/2R5/bk1N4/R7/P4B2/K4B2

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Sxc2#
    • 1...Bb5
      • 2.Sc2#
  • Tries
    • 1.Kb2?
      • 1...Bd1
        • 2.Sxc6#
        • 2.Rc4#
      • 1...Bc2
        • 2.Sxc2#
        • 2.Sxc6#
        • 2.Rc4#
      • 1...Bb3
        • 2.Sxc6#
      • 1...Bb5
        • 2.Sc2#
      • 1...Kxc5!
  • Keys
    • 1.Ra5!
      • 1...Kxa3
        • 2.Sc2#
      • 1...Kxa5
        • 2.Sxc6#
      • 1...Bd1
        • 2.Sxc6#
        • 2.Be1#
      • 1...Bc2
        • 2.Sxc2#
        • 2.Sxc6#
        • 2.Be1#
      • 1...Bb3
        • 2.Be1#
      • 1...Bb5
        • 2.Sc2#
      • 1...c5
        • 2.R5xa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(F),XB(a)
    • B(a);N_GUARD::S(F)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • B(a);N_GUARD::S(F),XP(c)
        • B(a);N_GUARD::S(F)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
  • Actual
    • R(G);
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT,XR(E)::S(F)
      • K(b);P_SPINB(a),S_FLIGHT,XR(G)::S(F),XP(c)
      • B(a);::B(D)
      • B(a);N_GUARD::S(F)
      • P(c);SBLOCK::R1(G),XB(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).