MESON Chess Problem Database

Problem Display
PID: 259138 (1bb4Q/4pN2/pPp2r1p/K1R3Nr/4PkPB/5p2/3P4/6R1 w - - 0 1)

Gross, Izidor

Western Morning News, 1923

(First published on Sat Jul 14 1923)

1bb4Q/4pN2/pPp2r1p/K1R3Nr/4PkPB/5p2/3P4/6R1

#2

11 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qe5#
    • 1...Re6
      • 2.Rf5#
    • 1...Bxg4
      • 2.Bg3#
    • 1...Be6
      • 2.Qxb8#
    • 1...e6
      • 2.Qxf6#
  • Tries
    • 1.Qxf6+?
      • 1...Bf5
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...exf6!
  • Keys
    • 1.Rc4!
      • threat
        • 2.e5#
      • 1...Bxg4
        • 2.Bg3#
      • 1...Rd6
        • 2.Qe5#
      • 1...Be5
        • 2.Sh3#
      • 1...Bf5
        • 2.Sh3#
        • 2.exf5#
      • 1...Be6
        • 2.Qxb8#
      • 1...e5
        • 2.Sh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(f);OGATE::QAB1(K)
    • R(f);N_GUARD,S_CUTB(j)::R1(G)
    • B(j);SBLOCK,XP(D)::B(E)
    • B(j);OGATE::QAB(K),XB(i)
    • P(h);N_GUARD,S_CUTB(j)::QAR2(K),XR(f)
  • Tries
    • Try
      • Q(K);CHECK,XR(f)
      • Refutation
        • P(h);XQ(K)
  • Actual
    • R(G);P_SPINS(H)
    • Threat
      • R(G)+P(C)
    • Vars
      • B(j);SBLOCK,XP(D)::B(E)
      • R(f);OGATE::QAB1(K)
      • B(i);N_PINS(H)::S(H)
      • B(j);OGATE::QAB(K),XB(i)
      • P(h);N_PINS(H)::S(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).