MESON Chess Problem Database

Problem Display
PID: 189798 (5K2/2p5/2p1R3/Bnk5/4R2p/bPp5/B2n4/7Q w - - 0 1)

Brock, David Thurston

Pittsburgh Gazette-Times, 1912

5K2/2p5/2p1R3/Bnk5/4R2p/bPp5/B2n4/7Q

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.b4#
    • 1...Bb2
      • 2.b4#
    • 1...Sb1
      • 2.Rc4#
    • 1...Sf1
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sd4
      • 2.R4e5#
    • 1...Sd6
      • 2.R6e5#
  • Tries
    • 1.Qg1+?
      • 1...Sd4
        • 2.R4e5#
      • 1...Kd5+!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qh5#
      • 1...Kd5+
        • 2.b4#
      • 1...Sxe4
        • 2.Re5#
      • 1...Sd4
        • 2.R4e5#
      • 1...Sd6
        • 2.R6e5#
      • 1...Sf3
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(b);N_GUARD::P(C)
    • S(a);N_GUARD::R1(D)
    • S(a);N_GUARD::R1(D),XS(a)
    • S(e);SBLOCK::R(D)
    • S(e);SBLOCK::R(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(e);P_SPINS(e)::R(D)
      • Refutation
        • K(f);CHECK,P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(f);CHECK,P-FLIGHT,P_SPINS(a)::B(B)+P(C)
      • S(a);XR(D)::R(F)
      • S(e);SBLOCK::R(D)
      • S(e);SBLOCK::R(F)
      • S(a);N_GUARD::R1(D)
      • S(a);N_GUARD::R1(D),XS(a)
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).