MESON Chess Problem Database

Problem Display
PID: 284 (2b4b/3p1K2/RN1kP3/4Rp1n/1prp2N1/1qp2B2/7Q/8 w - - 0 1)

Heathcote, Godfrey

The Observer, 1920

(First published on Sun Dec 12 1920)

2b4b/3p1K2/RN1kP3/4Rp1n/1prp2N1/1qp2B2/7Q/8

#2

8 + 11

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Rd5#
    • 1...Rc7
      • 2.Sc4#
      • 2.Sxc8#
    • 1...Bxe5
      • 2.Qxe5#
    • 1...Sf6
      • 2.Rxf5#
    • 1...Sg7
      • 2.Rxf5#
  • Tries
    • 1.Sa8+?
      • 1...Rc6
        • 2.Rd5#
      • 1...Bxa6!
  • Keys
    • 1.e7!
      • threat
        • 2.e8S#
      • 1...Rc5+
        • 2.Re6#
      • 1...Rc6+
        • 2.Rd5#
      • 1...Rc7+
        • 2.Sc4#
      • 1...Kc7
        • 2.Rc5#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Sf6
        • 2.Rxf5#
      • 1...Sg7
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(d);P_PINP(G),SBLOCK::QAB(A)+R(D),DCHECK
    • B(k);OGATE,P_SPINB(k),XR(D)::QAB1(A),XB(k)
    • S(g);N_GUARD,S_CUTB(k)::QAB(A)+R(D),XP(f)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(d);P_PINP(G),P_SPINR(d)::QAB(A)+R(D),DCHECK
      • Refutation
        • B(j);XR(E)
  • Actual
    • P(G);
    • Threat
      • P=S
    • Vars
      • R(d);CHECK,SBLOCK::QAB(A)+R(D),DCHECK
      • R(d);CHECK,SBLOCK::R(E)+S(F),DCHECK
      • K(h);S_FLIGHT::QAB(A)+R(D),DCHECK
      • B(k);OGATE,P_SPINB(k),XR(D)::QAB1(A),XB(k)
      • S(g);N_GUARD,S_CUTB(k)::QAB(A)+R(D),XP(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).