MESON Chess Problem Database

Problem Display
PID: 142058 (3N2B1/3p4/4pP2/2p1k3/3p1R2/B2P1K2/3Q4/8 w - - 0 1)

Markwick, Frederick W

The Chess Player's Chronicle (Sampson), 1881

3N2B1/3p4/4pP2/2p1k3/3p1R2/B2P1K2/3Q4/8

#2

8 + 5

115 Stratford Express 1922
14867 BCPS Library 2011
15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Sf7#
  • Tries
    • 1.Bxc5?
      • 1...Kd5
        • 2.Rf5#
      • 1...d5
        • 2.Sc6#
        • 2.Sf7#
        • 2.Qe1#
        • 2.Qe2#
      • 1...d6!
    • 1.Qa5?
      • 1...Kd5
        • 2.Qxc5#
      • 1...Kd6
        • 2.Qxc5#
      • 1...d5
        • 2.Sf7#
        • 2.Qc7#
      • 1...d6!
  • Keys
    • 1.Qh2!
      • 1...Kd5
        • 2.Rf5#
      • 1...Kd6
        • 2.Rxd4#
      • 1...d6
        • 2.Qh5#
      • 1...c4
        • 2.Qh5#
      • 1...d5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::S(G)
  • Tries
    • Try
      • B(B);XP(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(d)::R(E)
      • Refutation
        • P(e);
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • K(c);P-FLIGHT::QAR1(A),XP(b)
        • K(c);S_FLIGHT::QAB1(A),XP(b)
      • Refutation
        • P(e);
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(d)::R(E)
      • K(c);P_SPINP(b),S_FLIGHT::QAB(A)+R(E),DCHECK,XP(a)
      • P(e);SBLOCK::QAR(A)
      • P(b);::QAR(A)
      • P(e);SBLOCK::S(G)
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).