MESON Chess Problem Database

Problem Display
PID: 208142 (8/5brQ/r3ppR1/3p1k2/8/p1p1PBn1/K1P3R1/4b1q1 w - - 0 1)

Pierce, James

Dubuque Chess Journal, 1875

8/5brQ/r3ppR1/3p1k2/8/p1p1PBn1/K1P3R1/4b1q1

#2

7 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.R6g5#
      • 2.Qh5#
    • 1...Sh1
      • 2.R6g5#
      • 2.Qh5#
    • 1...Se2
      • 2.R6g5#
      • 2.Qh5#
    • 1...Se4
      • 2.R6g5#
    • 1...Sh5
      • 2.R6g5#
      • 2.Qxh5#
  • Tries
    • 1.Qh3+?
      • 1...Kxg6
        • 2.Qh5#
      • 1...Ke5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxf6#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxg6
        • 2.Qh5#
      • 1...Rxg6
        • 2.Qf4#
      • 1...Bxg6
        • 2.Qf4#
      • 1...Se4
        • 2.Qf4#
      • 1...Sh5
        • 2.Qxh5#
      • 1...e5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(e);::QAB(G)+R(F),DCHECK
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);P_SPINS(e),S_FLIGHT,XR(F)::QAB1(G)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XP(j)
    • Vars
      • K(g);P-FLIGHT::QAB1(G)
      • K(g);P_SPINS(e),S_FLIGHT,XR(F)::QAB1(G)
      • R(l);SBLOCK,XR(F)::QAR1(G)
      • B(k);SBLOCK,XR(F)::QAR1(G)
      • S(e);::QAR1(G)
      • S(e);N_GUARD::QAR2(G),XS(e)
      • P(i);SBLOCK::QAB1(G)
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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).