MESON Chess Problem Database

Problem Display
PID: 243427 (1r1B3Q/pRn1pKp1/rn6/kp6/8/1RP5/bN6/2N5 w - - 0 1)

Beale, John Lindsay

Chess World (The), 1949

1r1B3Q/pRn1pKp1/rn6/kp6/8/1RP5/bN6/2N5

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb3+
      • 2.Sxb3#
    • 1...Sc4
      • 2.R3xb5#
    • 1...Sbd5
      • 2.Ra3#
      • 2.R3xb5#
    • 1...Scd5
      • 2.Ra3#
    • 1...Se6
      • 2.Ra3#
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qb4#
      • 1...Bxb3+
        • 2.Sxb3#
      • 1...b4
        • 2.Qxb4#
      • 1...Sc4
        • 2.R3xb5#
      • 1...Sbd5
        • 2.Ra3#
        • 2.R3xb5#
      • 1...Scd5
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(a);CHECK,XR(C)::S(A),XB(a)
    • S(e);N_PINR(C),P_SPINS(g)::R1(C),XP(c)
    • S(g);N_PINR(C),P_SPINS(e)::R(C)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • B(a);CHECK,XR(C)::S(A),XB(a)
      • P(c);::QAB1(H),XP(c)
      • S(e);N_PINR(C),P_SPINS(g)::R1(C),XP(c)
      • S(g);N_PINR(C),P_SPINS(e)::R(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).