MESON Chess Problem Database

Problem Display
PID: 186854 (2B5/2P1bp2/N2kP1p1/K3pP2/4P3/p1R3p1/8/7r w - - 0 1)

Russ, Colin Albert Harry

Problem Observer, 2018

2B5/2P1bp2/N2kP1p1/K3pP2/4P3/p1R3p1/8/7r

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd8
      • 2.cxd8Q#
  • Tries
    • 1.Bd7?
      • threat
        • 2.Rd3#
        • 2.Rc6#
        • 2.c8S#
      • 1...fxe6
        • 2.Rd3#
      • 1...Bh4
        • 2.c8S#
      • 1...Bg5
        • 2.c8S#
      • 1...Bf6
        • 2.c8S#
      • 1...Bf8
        • 2.c8S#
      • 1...Rc1
        • 2.Rd3#
        • 2.c8S#
      • 1...Rd1
        • 2.Rc6#
        • 2.c8S#
      • 1...Rh8
        • 2.Rd3#
        • 2.Rc6#
      • 1...Bd8!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Rd3#
        • 2.Rc6#
        • 2.c8S#
      • 1...gxf5
        • 2.Rc6#
      • 1...fxe6
        • 2.Rd3#
      • 1...Bh4
        • 2.c8S#
      • 1...Bg5
        • 2.c8S#
      • 1...Bf6
        • 2.c8S#
      • 1...Bd8
        • 2.cxd8Q#
      • 1...Bf8
        • 2.c8S#
      • 1...Rc1
        • 2.Rd3#
        • 2.c8S#
      • 1...Rd1
        • 2.Rc6#
        • 2.c8S#
      • 1...Rh8
        • 2.Rd3#
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(g);OGATE,P_PINP(G)::PXB(g)=Q
  • Tries
    • Try
      • B(H);
      • Threat
        • DUALS(3)
      • Vars
        • P(h);XP(F)::R(A)
        • B(g);::P=S
      • Refutation
        • B(g);P_PINP(G)
  • Actual
    • B(H);
    • Threat
      • DUALS(3)
    • Vars
      • P(f);XP(D)::R1(A)
      • P(h);XP(F)::R(A)
      • B(g);::P=S
      • B(g);OGATE,P_PINP(G)::PXB(g)=Q
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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).