MESON Chess Problem Database

Problem Display
PID: 148920 (b2r3b/KB2RP1p/Np1k3r/7p/5N2/3nQn2/8/8 w - - 0 1)

Dawson, Thomas Rayner

Hampshire Post, 1915

(First published on Fri Jun 4 1915)

b2r3b/KB2RP1p/Np1k3r/7p/5N2/3nQn2/8/8

#2

7 + 10

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Qxe6#
    • 1...Re8
      • 2.fxe8S#
    • 1...Bf6
      • 2.Qe6#
    • 1...Sc1
      • 2.Qa3#
    • 1...Sde1
      • 2.Qa3#
    • 1...Sb2
      • 2.Qa3#
    • 1...Sf2
      • 2.Qa3#
    • 1...Sxf4
      • 2.Qa3#
    • 1...Sde5
      • 2.Qa3#
  • Tries
    • 1.Re6+?
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Kd7!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qe7#
      • 1...Re6
        • 2.Qxe6#
      • 1...Rd7
        • 2.Rc6#
      • 1...Re8
        • 2.fxe8S#
      • 1...Be5
        • 2.Qxb6#
      • 1...Bf6
        • 2.Qe6#
      • 1...Sde5
        • 2.Qa3#
      • 1...Sfe5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::QAR1(A),XR(f)
    • R(i);OGATE::PXR(i)=S
    • B(j);S_CUTR(f)::QAR1(A)
    • S(a);OGATE::QAB(A)
    • S(a);OGATE,XS(B)::QAB(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(f);OGATE,XR(F)::QAR1(A),XR(f)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • QAB1(A)
    • Vars
      • R(f);N_GUARD::QAR1(A),XR(f)
      • R(i);SBLOCK::R1(F)
      • R(i);OGATE::PXR(i)=S
      • B(j);SBLOCK::QAR2(A),XP(d)
      • B(j);S_CUTR(f)::QAR1(A)
      • S(a);OGATE,SBLOCK::QAB(A)
      • S(b);N_GUARD,S_CUTB(j)::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).