MESON Chess Problem Database

Problem Display
PID: 252590 (2BK4/7p/2pk4/4p1R1/2P5/2PprP2/7Q/8 w - - 0 1)

Gregson, DC

The Field, 1908

(First published on Sat May 2 1908)

2BK4/7p/2pk4/4p1R1/2P5/2PprP2/7Q/8

#2

7 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Qxe5#
    • 1...c5
      • 2.Qh6#
  • Tries
    • 1.Rxe5?
      • threat
        • 2.Rd5#
        • 2.c5#
      • 1...c5
        • 2.Re6#
      • 1...Rxe5!
    • 1.Qxh7?
      • threat
        • 2.Qe7#
      • 1...c5
        • 2.Rg6#
        • 2.Qg6#
        • 2.Qh6#
        • 2.Qc7#
        • 2.Qd7#
      • 1...Kc5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qf8#
      • 1...Kc5
        • 2.Qd4#
      • 1...Rxf3
        • 2.Qxe5#
      • 1...exf4
        • 2.c5#
      • 1...c5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD,XP(C)::QAB1(A),XP(c)
    • P(d);SBLOCK::QAR(A)
  • Tries
    • Try
      • R(E);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);SBLOCK::QAB(A)+R(E),DCHECK
      • Refutation
        • R(b);P_SPINR(b),XR(E)
    • Try
      • Q(A);N_PINP(c),XP(f)
      • Threat
        • QAB1(A)
      • Refutation
        • K(e);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(e);S_FLIGHT::QAB1(A)
      • R(b);N_GUARD,XP(C)::QAB1(A),XP(c)
      • P(c);N_SPINP(c),XQ(A)::P(D)
      • P(d);SBLOCK::QAR2(A)
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).