MESON Chess Problem Database

Problem Display
PID: 224339 (8/7Q/1b1PBp2/3RPr2/n3k3/4p1Pb/K5P1/B2NRr2 w - - 0 1)

Stubbs, Arthur Goodwin

Sunday Chronicle, 1944

(First published on Sat Sep 30 1944)

8/7Q/1b1PBp2/3RPr2/n3k3/4p1Pb/K5P1/B2NRr2

#2

11 + 8

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sf2#
    • 1...Rh1
      • 2.Sf2#
    • 1...Rf2+
      • 2.Sxf2#
    • 1...Ba5
      • 2.Rxe3#
    • 1...Bc7
      • 2.Rxe3#
    • 1...Bd8
      • 2.Rxe3#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sc5
      • 2.Sc3#
      • 2.Rxe3#
  • Tries
    • 1.Rd4+?
      • 1...Kxe5
        • 2.Rxe3#
      • 1...Bxd4!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Rd2#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Rxe5
        • 2.Rd4#
      • 1...Bd4
        • 2.Qb1#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc5
        • 2.Sc3#
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);CHECK,N_GUARD::S(B),XR(a)
    • B(g);N_GUARD::R1(C),XP(b)
    • S(d);N_GUARD::S(B)
    • S(d);CHECK,N_GUARD::S(B),XS(d)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);N_SPINR(f),P-FLIGHT,XP(H)::R(C),XP(b)
      • Refutation
        • B(g);XR(G)
  • Actual
    • Q(K);N_PINR(f)
    • Threat
      • QAB(K)+R(G)
    • Vars
      • S(d);CHECK,N_GUARD::S(B),XS(d)
      • R(f);SBLOCK,XP(H)::QAB(K)+R(G),DCHECK
      • B(g);OGATE::QAB(K)
      • S(d);N_GUARD::S(B)
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).