MESON Chess Problem Database

Problem Display
PID: 187810 (8/5p1B/5PpK/8/3BPk2/7Q/5Nnn/7b w - - 0 1)

Thompson, WE

The Times, 1909

8/5p1B/5PpK/8/3BPk2/7Q/5Nnn/7b

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sh4
      • 2.Qe3#
    • 1...Sf1
      • 2.Qg4#
    • 1...Sf3
      • 2.Qg4#
    • 1...Sg4+
      • 2.Qxg4#
    • 1...g5
      • 2.Sd3#
  • Tries
    • 1.Bxg6?
      • threat
        • 2.Sd3#
      • 1...Sg4+
        • 2.Qxg4#
      • 1...Se1
        • 2.Qe3#
      • 1...fxg6!
    • 1.Bg8?
      • 1...Sg4+
        • 2.Qxg4#
      • 1...Se1
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sf3
        • 2.Qg4#
      • 1...g5!
    • 1.Qxg2?
      • threat
        • 2.Sd3#
        • 2.Sh3#
      • 1...Sg4+
        • 2.Qxg4#
      • 1...Sf3
        • 2.Qg4#
      • 1...Bxg2!
  • Keys
    • 1.Kg7!
      • 1...Kg5
        • 2.Qh6#
      • 1...Se1
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Sf1
        • 2.Qg4#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...g5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
    • S(c);N_GUARD::QAR1(B)
    • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
    • P(e);::S(A)
  • Tries
    • Try
      • B(G);XP(e)
      • Threat
        • S(A)
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • P(f);XB(G)
    • Try
      • B(G);
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
        • S(b);N_GUARD::QAB1(B)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(c);N_GUARD::QAR1(B)
      • Refutation
        • P(e);
    • Try
      • Q(B);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(B),XS(c)
        • S(c);N_GUARD::QAR1(B)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • K(F);S_FLIGHT
    • Vars
      • K(d);S_FLIGHT::QAB1(B)
      • S(b);N_GUARD::QAB1(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(c);N_GUARD::QAR1(B)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • P(e);SBLOCK::S(A)
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).