MESON Chess Problem Database

Problem Display
PID: 222708 (r1b5/p1P1p3/pk6/2N5/2P5/BN3n2/3Q2B1/1R5K w - - 0 1)

Elson, Jacob

Charleston Sunday News, 1883

r1b5/p1P1p3/pk6/2N5/2P5/BN3n2/3Q2B1/1R5K

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qa5#
    • 1...Sg1
      • 2.Qa5#
    • 1...Sh2
      • 2.Qa5#
    • 1...Sd4
      • 2.Qa5#
    • 1...Sh4
      • 2.Qa5#
    • 1...Se5
      • 2.Qa5#
    • 1...Sg5
      • 2.Qa5#
    • 1...e5
      • 2.Qd6#
    • 1...e6
      • 2.Qd6#
  • Tries
    • 1.Bxf3?
      • threat
        • 2.Qa5#
      • 1...a5
        • 2.Qxa5#
      • 1...Kxc7!
  • Keys
    • 1.Qd8!
      • 1...Kc6
        • 2.Sd4#
        • 2.Sa5#
      • 1...Rb8
        • 2.cxb8S#
      • 1...Bh3
        • 2.c8Q#
        • 2.c8R#
      • 1...Bg4
        • 2.c8Q#
        • 2.c8R#
      • 1...Bf5
        • 2.c8Q#
        • 2.c8R#
      • 1...Be6
        • 2.c8Q#
        • 2.c8R#
      • 1...Bb7
        • 2.c8Q#
        • 2.c8R#
      • 1...Bd7
        • 2.c8Q#
        • 2.c8R#
      • 1...Se1
        • 2.Sa4#
      • 1...Sg1
        • 2.Sa4#
      • 1...Sd2
        • 2.Sa4#
      • 1...Sh2
        • 2.Sa4#
      • 1...Sd4
        • 2.Sa4#
      • 1...Sh4
        • 2.Sa4#
      • 1...Se5
        • 2.Sa4#
      • 1...Sg5
        • 2.Sa4#
      • 1...a5
        • 2.Sd4#
      • 1...e5
        • 2.Qd6#
      • 1...e6
        • 2.Qd6#

This is a version of 222460

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);::QAB1(C)
    • P(e);N_GUARD::QAR2(C)
  • Tries
    • Try
      • B(D);XS(a)
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XP(I)
  • Actual
    • Q(C);
    • Vars
      • R(f);OGATE::PXR(f)=S
      • B(g);OGATE::P=Q
      • S(a);::S(H)
      • P(b);SBLOCK::R(A)+S(F)
      • P(e);N_GUARD::QAR2(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).