MESON Chess Problem Database

Problem Display
PID: 189889 (7b/4Q3/1ppRb3/3q3R/3kN3/3P4/B2K1P2/8 w - - 0 1)

Dashiell, EL

Pittsburgh Gazette-Times, 1912

7b/4Q3/1ppRb3/3q3R/3kN3/3P4/B2K1P2/8

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bg7
      • 2.Qxg7#
  • Tries
    • 1.Rxh8?
      • threat
        • 2.Qf6#
        • 2.Qg7#
      • 1...Ke5
        • 2.Qf6#
      • 1...Bf7
        • 2.Qf6#
      • 1...Qxd6!
    • 1.Rdxd5+?
      • 1...cxd5
        • 2.Qb4#
      • 1...Bxd5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sxe6#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Ke5
        • 2.Sxe6#
      • 1...Qxd6
        • 2.Sf3#
      • 1...Bh3
        • 2.Qe3#
      • 1...Bg4
        • 2.Qe3#
      • 1...Bf5
        • 2.Qe3#
      • 1...Bd7
        • 2.Qe3#
      • 1...Bf7
        • 2.Qe3#
      • 1...Bc8
        • 2.Qe3#
      • 1...Bg8
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 2
  • Sets
    • B(f);N_GUARD::QAB(H),XB(f)
  • Tries
    • Try
      • R(F);XB(f)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINQ(b),P_PINP(D),P_SPINB(e),S_FLIGHT::QAB1(H)
        • B(e);::QAB(H)
      • Refutation
        • Q(b);N_SPINQ(b),XR(G)
    • Try
      • R(G);CHECK,XQ(b)
      • Vars
        • P(d);XR(G)::QAR2(H)
      • Refutation
        • B(e);XR(G)
  • Actual
    • S(E);
    • Threat
      • S(E),XB(e)
    • Vars
      • K(a);N_SPINQ(b),P_PINP(D),S_FLIGHT::QAB(H)+R(G),DCHECK,XQ(b)
      • K(a);N_SPINQ(b),P_PINP(D),P_SPINB(e),S_FLIGHT::R(F)+S(E),XB(e)
      • Q(b);N_SPINQ(b),XR(G)::S(E)
      • B(e);OGATE::QAB1(H)
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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).