MESON Chess Problem Database

Problem Display
PID: 9348 (2K2R2/2N2n2/3p4/1Q2B3/4k2N/2P5/3rpP2/2r5 w - - 0 1)

Blake, Percy Francis

3rd Prize, Brighton Society, 1901

2K2R2/2N2n2/3p4/1Q2B3/4k2N/2P5/3rpP2/2r5

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxe2#
    • 1...Ra2
      • 2.Qd5#
    • 1...Rb2
      • 2.Qd5#
    • 1...Rc2
      • 2.Qd5#
    • 1...Rd4
      • 2.Qxe2#
    • 1...Rd5
      • 2.Qxe2#
      • 2.Qxd5#
    • 1...Sg5
      • 2.Rf4#
    • 1...Sh6
      • 2.Rf4#
    • 1...Sd8
      • 2.Rf4#
    • 1...Sh8
      • 2.Rf4#
  • Tries
    • 1.Qc4+?
      • 1...Rd4
        • 2.Qxe2#
        • 2.Qxd4#
      • 1...Kxe5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Rxc3+
        • 2.Sxc3#
      • 1...Kxe5
        • 2.Re8#
      • 1...Rxd5
        • 2.Qxe2#
      • 1...Sxe5
        • 2.Rf4#
      • 1...dxe5
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • R(b);N_GUARD::QAR2(D),XP(c)
    • R(b);N_GUARD::QAB1(D)
    • S(f);OGATE::R1(H)
  • Tries
    • Try
      • Q(D);CHECK
      • Refutation
        • K(d);P-FLIGHT,XB(E)
  • Actual
    • S(F);P_SPINP(B)
    • Threat
      • S(F)
    • Vars
      • R(a);CHECK,XP(B)::S(F),XR(a)
      • K(d);OGATEB,P-FLIGHT,XB(E)::R(H)
      • R(b);N_GUARD,SBLOCK,XS(F)::QAR2(D),XP(c)
      • S(f);OGATE,SBLOCK,XB(E)::R1(H)
      • P(e);SBLOCK,XB(E)::P(A)
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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).