MESON Chess Problem Database

Problem Display
PID: 234676 (8/8/1Q2K3/8/k3B3/2r5/1P6/4N3 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2009

8/8/1Q2K3/8/k3B3/2r5/1P6/4N3

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Bxc2#
    • 1...Ra3
      • 2.Bc6#
    • 1...Rd3
      • 2.Bc6#
    • 1...Rf3
      • 2.Bc6#
    • 1...Rg3
      • 2.Bc6#
    • 1...Rh3
      • 2.Bc6#
    • 1...Rc6+
      • 2.Bxc6#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qb4#
      • 1...Rc6+
        • 2.Bxc6#
      • 1...Rxd3
        • 2.Bc6#
      • 1...Rb3
        • 2.Sc5#
        • 2.Qa6#
      • 1...Rc4!
    • 1.Bc2+?
      • 1...Rb3
        • 2.Bxb3#
      • 1...Rxc2!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qb4#
      • 1...Rc6+
        • 2.Bxc6#
      • 1...Rxc2
        • 2.Bxc2#
      • 1...Rb3
        • 2.Qa6#
      • 1...Rc4
        • 2.b3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::B(C),XR(a)
    • R(a);N_GUARD::B(C)
    • R(a);N_GUARD,SBLOCK::B(C)
    • R(a);CHECK,N_GUARD::B(C),XR(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(D)
      • Vars
        • R(a);CHECK,N_GUARD::B(C),XR(a)
        • R(a);N_GUARD,XS(A)::B(C)
      • Refutation
        • R(a);
    • Try
      • B(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::B(C),XR(a)
      • Refutation
        • R(a);XB(C)
  • Actual
    • S(A);
    • Threat
      • QAR1(D)
    • Vars
      • R(a);CHECK,N_GUARD::B(C),XR(a)
      • R(a);OGATE,XS(A)::B(C),XR(a)
      • R(a);SBLOCK::QAR2(D)
      • R(a);N_GUARD::P(B)
HTML5 logo

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).