MESON Chess Problem Database

Problem Display
PID: 138903 (8/r7/2Bp1Nn1/1Rr1k1Pb/1p2PN2/4P1P1/2PP3n/bK6 w - - 0 1)

Cox, C

The Problemist, 1936

8/r7/2Bp1Nn1/1Rr1k1Pb/1p2PN2/4P1P1/2PP3n/bK6

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Rxd5#
    • 1...Ra2
      • 2.Sd7#
    • 1...Ra3
      • 2.Sd7#
    • 1...Ra4
      • 2.Sd7#
    • 1...Ra5
      • 2.Sd7#
    • 1...Ra6
      • 2.Sd7#
    • 1...Rd7
      • 2.Sxd7#
    • 1...Ra8
      • 2.Sd7#
  • Tries
    • 1.Rxc5+?
      • 1...d5
        • 2.Rxd5#
      • 1...dxc5!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sd3#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...Sxf4
        • 2.gxf4#
      • 1...Rc3
        • 2.d4#
      • 1...Ra3
        • 2.Sd7#
      • 1...Be2
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(d);OGATE::R1(H),XR(d)
    • R(i);N_GUARD::S(K)
    • R(i);N_GUARD::S(K),XR(i)
  • Tries
    • Try
      • R(H);CHECK,XR(d)
      • Vars
        • P(g);P_SPINP(g)::R1(H),XP(g)
      • Refutation
        • P(g);XR(H)
  • Actual
    • B(J);N_PINR(d)
    • Threat
      • S(G)
    • Vars
      • R(d);OGATE,P_SPINR(d),XB(J)::R1(H),XR(d)
      • S(h);OGATE,XS(G)::P(E),XS(h)
      • R(d);S_CUTB(a)::P(C)
      • R(i);N_GUARD::S(K)
      • B(f);N_GUARD::S(G),XS(h)
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).