MESON Chess Problem Database

Problem Display
PID: 25702 (3n1b2/1N2np2/K2Q1r2/R4B2/1pk2p2/rb1R4/4P3/8 w - - 0 1)

Brotherton, David WA

The Problemist, 1962

3n1b2/1N2np2/K2Q1r2/R4B2/1pk2p2/rb1R4/4P3/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5+
      • 2.Sxa5#
    • 1...Rxf5
      • 2.Qd4#
    • 1...Rxd6+
      • 2.Sxd6#
    • 1...Ba4
      • 2.Rc5#
    • 1...Sec6
      • 2.Qd5#
    • 1...Sdc6
      • 2.Qc5#
  • Tries
    • 1.Rc3+?
      • 1...bxc3
        • 2.Bd3#
      • 1...Kxc3!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Bb5#
      • 1...Rxa5+
        • 2.Sxa5#
      • 1...Rxd6+
        • 2.Sxd6#
      • 1...Rf5
        • 2.Qd4#
      • 1...Ba4
        • 2.Rc5#
      • 1...Sec6
        • 2.Qd5#
      • 1...Sdc6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,XR(C)::S(G),XR(a)
    • R(f);N_PINQ(F),XB(D)::QAR1(F)
    • R(f);CHECK,XQ(F)::S(G),XR(f)
    • B(b);N_PINR(C)::R1(C)
    • S(g);N_PINQ(F)::QAB1(F)
    • S(i);N_PINQ(F)::QAR1(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • P(c);SBLOCK,XR(B)::B(D)
      • Refutation
        • K(d);P-FLIGHT,XR(B)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • R(a);CHECK,XR(C)::S(G),XR(a)
      • R(f);CHECK,XQ(F)::S(G),XR(f)
      • R(f);N_PINQ(F)::QAR1(F)
      • B(b);N_PINR(C)::R1(C)
      • S(g);N_PINQ(F)::QAB1(F)
      • S(i);N_PINQ(F)::QAR1(F)
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).