MESON Chess Problem Database

Problem Display
PID: 2733 (B7/1n2Q1N1/6n1/4p1Rq/5kpp/7P/3N4/2B4K w - - 0 1)

Thomson, Robert Gavin

1st Prize, The Schoolmaster, 1893

B7/1n2Q1N1/6n1/4p1Rq/5kpp/7P/3N4/2B4K

#2

8 + 7

58 Tijdschrift vd NSB 1893
187 The Chess Bouquet 1897
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sf8
      • 2.Qxe5#
    • 1...Sh8
      • 2.Qxe5#
    • 1...Sa5
      • 2.Sf1#
    • 1...Sc5
      • 2.Sf1#
    • 1...Sd6
      • 2.Sf1#
    • 1...Sd8
      • 2.Sf1#
  • Tries
    • 1.Qf6+?
      • 1...Kg3
        • 2.Qf3#
      • 1...Ke3!
    • 1.Qf7+?
      • 1...Kg3
        • 2.Qf3#
      • 1...Kxg5
        • 2.Sf3#
        • 2.Se4#
      • 1...Ke3!
  • Keys
    • 1.Qc5!
      • 1...Kg3
        • 2.Qe3#
      • 1...Kxg5
        • 2.Se4#
      • 1...Qxg5
        • 2.Qf2#
      • 1...Sxc5
        • 2.Sf1#
      • 1...gxh3
        • 2.Se6#
      • 1...Qh6
        • 2.Rxg4#
      • 1...Qh7
        • 2.Rxg4#
      • 1...Qh8
        • 2.Rxg4#
      • 1...Se7
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#
      • 1...Sa5
        • 2.Sf1#
      • 1...Sd6
        • 2.Sf1#
      • 1...Sd8
        • 2.Sf1#
      • 1...g3
        • 2.Se6#
      • 1...e4
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::QAB1(F),XP(d)
    • S(g);::B(A)+S(C)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(b),S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,P_SPINP(b),S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT::QAR2(F)
      • K(a);P_SPINP(d),S_FLIGHT,XR(E)::B(A)+S(C),DCHECK
      • Q(e);SBLOCK,XR(E)::QAR2(F)
      • S(g);XQ(F)::B(A)+S(C)
      • P(b);XP(D)::S(G)
      • Q(e);N_GUARD::R1(E),XP(b)
      • S(f);N_GUARD::QAB1(F),XP(d)
      • S(g);::B(A)+S(C)
      • P(b);::S(G)
      • P(d);::S(G),XQ(e)
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).