MESON Chess Problem Database

Problem Display
PID: 223296 (8/7Q/K1PpPp2/3kp1p1/3bR1B1/2pN2N1/2P5/8 w - - 0 1)

Whalley, Louis

Charleston Sunday News, 1885

8/7Q/K1PpPp2/3kp1p1/3bR1B1/2pN2N1/2P5/8

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qb7#
  • Tries
    • 1.Rxd4+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kxc6
        • 2.Qb7#
        • 2.Qd7#
      • 1...exd4!
    • 1.Qb7?
      • 1...Kc4
        • 2.Qb3#
        • 2.Qb5#
      • 1...Bg1
        • 2.c7#
      • 1...Bf2
        • 2.c7#
      • 1...Be3
        • 2.c7#
      • 1...Bc5
        • 2.c7#
      • 1...Bb6
        • 2.c7#
      • 1...Ba7
        • 2.c7#
      • 1...f5!
  • Keys
    • 1.Sf5!
      • 1...Kc4
        • 2.Se3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Bg1
        • 2.Se7#
      • 1...Bf2
        • 2.Se7#
      • 1...Be3
        • 2.Se7#
      • 1...Bc5
        • 2.Se7#
      • 1...Bb6
        • 2.Se7#
      • 1...Ba7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,S_FLIGHT,XP(G)::QAB1(I)
  • Tries
    • Try
      • R(D);CHECK,XB(b)
      • Vars
        • K(c);P-FLIGHT,XR(D)::QAR1(I)
      • Refutation
        • P(d);XR(D)
    • Try
      • Q(I);
      • Vars
        • B(b);::QAB(I)+P(G)
      • Refutation
        • P(g);
  • Actual
    • S(C);
    • Vars
      • K(c);P_SPINB(b),S_FLIGHT::S(C)
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB(I)
      • K(c);OGATEB,S_FLIGHT,XP(G)::QAB1(I)
      • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(H)::QAB(I)
      • B(b);::S(C)
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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).