MESON Chess Problem Database

Problem Display
PID: 169266 (8/8/8/7R/3B3b/5K1R/7P/7k w - - 0 1)

Lincoln, Robert A

1st Place, SuperProblem 190. TT, 2017

8/8/8/7R/3B3b/5K1R/7P/7k

#2

5 + 2

145 StrateGems 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.hxg3#
  • Tries
    • 1.Re5?
      • 1...Be1
        • 2.Rxe1#
      • 1...Bg3
        • 2.hxg3#
      • 1...Bg5
        • 2.Re1#
      • 1...Bf6
        • 2.Re1#
      • 1...Be7
        • 2.Re1#
      • 1...Bd8
        • 2.Re1#
      • 1...Bf2!
  • Keys
    • 1.Rg3!
      • 1...Kxh2
        • 2.Rxh4#
      • 1...Bxg3
        • 2.hxg3#
      • 1...Bg5
        • 2.Rg1#
      • 1...Bf6
        • 2.Rg1#
      • 1...Be7
        • 2.Rg1#
      • 1...Bd8
        • 2.Rg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE::R(C)+P(A),XB(b)
  • Tries
    • Try
      • R(E);
      • Vars
        • B(b);N_GUARD::R(E),XB(b)
        • B(b);OGATE::R(C)+P(A),XB(b)
        • B(b);N_GUARD::R(E)
      • Refutation
        • B(b);
  • Actual
    • R(C);
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINB(b),XP(A)::R(E),XB(b)
      • B(b);OGATE,XR(C)::R(E)+P(A),XB(b)
      • B(b);::R1(C)
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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).