MESON Chess Problem Database

Problem Display
PID: 154148 (7K/1p2N3/pQ5p/4k3/r1b3R1/2nn3P/3P4/1B6 w - - 0 1)

Valle, Giovanni Batista

Nuova Rivista degli Scacchi, 1880

7K/1p2N3/pQ5p/4k3/r1b3R1/2nn3P/3P4/1B6

#2

7 + 8

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.d4#
    • 1...Se1
      • 2.d4#
    • 1...Sb2
      • 2.d4#
    • 1...Sf2
      • 2.d4#
    • 1...Sb4
      • 2.d4#
    • 1...Sf4
      • 2.d4#
    • 1...Sc5
      • 2.d4#
  • Tries
    • 1.Sg6+?
      • 1...Kd5
        • 2.Rd4#
      • 1...Kf5!
    • 1.Re4+?
      • 1...Kxe4
        • 2.Qe3#
      • 1...Sxe4!
    • 1.Rg5+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...hxg5!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Qf6#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxf4
        • 2.d4#
      • 1...Be6
        • 2.Qc7#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • S(b);OGATE::P(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT::R1(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINS(b)
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(b),XR(D)::QAR1(E)
      • Refutation
        • S(a);XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(b)::QAR1(E)
        • K(e);S_FLIGHT::QAB1(E)
      • Refutation
        • P(g);XR(D)
  • Actual
    • R(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(e);S_FLIGHT,XR(D)::QAB1(E)
      • S(b);OGATE,SBLOCK,XR(D)::P(B)
      • B(d);SBLOCK::QAB(E)
      • S(a);SBLOCK::R1(D)
      • S(a);SBLOCK::S(F)
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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).