MESON Chess Problem Database

Problem Display
PID: 41901 (4R3/K6Q/2pNN1b1/3k4/6Pn/1P6/6PB/8 w - - 0 1)

Esslinger, Fritz

Schweizerische Schachzeitung, 1906

4R3/K6Q/2pNN1b1/3k4/6Pn/1P6/6PB/8

#2

9 + 4

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qxd3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Bh5
      • 2.Qd3#
      • 2.Qe4#
    • 1...Bf7
      • 2.Qd3#
      • 2.Qe4#
    • 1...Bxe8
      • 2.Qe4#
    • 1...c5
      • 2.Qb7#
  • Tries
    • 1.Qxg6?
      • threat
        • 2.Qd3#
        • 2.Qe4#
      • 1...c5
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sxg6!
    • 1.Qg7?
      • threat
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxe8
        • 2.Qe5#
      • 1...c5
        • 2.Qb7#
      • 1...Sf5
        • 2.Qe5#
      • 1...Sf3!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.Sf4#
      • 1...Bxe8
        • 2.Sbc7#
      • 1...cxb5
        • 2.Qb7#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(d);OGATE::QAR2(H),XB(d)
    • B(d);OGATE::QAB1(H),XB(d)
    • B(d);OGATE,XR(I)::QAB1(H)
    • P(c);OGATEB::QAB(H)
  • Tries
    • Try
      • Q(H);XB(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(H)
        • S(a);::QAB1(H)
        • S(a);N_GUARD::QAR2(H),XS(a)
      • Refutation
        • S(a);XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XR(I)::QAR1(H)
        • P(c);OGATEB::QAB(H)
        • S(a);::QAR1(H)
      • Refutation
        • S(a);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(b);P_SPINB(d),S_FLIGHT::R(I)+S(F)
      • B(d);XR(I)::S(E)
      • P(c);OGATEB,XS(E)::QAB(H)
      • P(c);OGATEB::QAB(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).