MESON Chess Problem Database

Problem Display
PID: 198168 (8/K1p1pq2/5Rp1/6Q1/2B1Rp2/5N1p/3p1k1p/1nB3Nr w - - 0 1)

Guidelli, Giorgio

L'Italia Scacchistica, 1920

8/K1p1pq2/5Rp1/6Q1/2B1Rp2/5N1p/3p1k1p/1nB3Nr

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sxh2?
      • threat
        • 2.Sxh3#
        • 2.Re2#
      • 1...Qxc4
        • 2.Sxh3#
        • 2.Rfxf4#
      • 1...Rxg1
        • 2.Re2#
      • 1...dxc1S
        • 2.Sxh3#
      • 1...d1Q
        • 2.Sxh3#
      • 1...d1B
        • 2.Sxh3#
      • 1...Qe6
        • 2.Rfxf4#
      • 1...Qh7
        • 2.Re2#
        • 2.Rfxf4#
      • 1...Sc3
        • 2.Sxh3#
      • 1...Rxh2!
    • 1.Sh4?
      • threat
        • 2.Sxh3#
      • 1...Qxc4
        • 2.Rfxf4#
      • 1...Rxg1
        • 2.Qxf4#
      • 1...hxg1Q
        • 2.Qxf4#
      • 1...hxg1B
        • 2.Qxf4#
      • 1...hxg1R
        • 2.Qxf4#
      • 1...Qe6
        • 2.Rfxf4#
      • 1...hxg1S!
  • Keys
    • 1.Se1!
      • threat
        • 2.Sxh3#
      • 1...Qxc4
        • 2.Rfxf4#
      • 1...Rxg1
        • 2.Qxf4#
      • 1...dxe1Q
        • 2.Rexf4#
      • 1...dxe1S
        • 2.Be3#
      • 1...dxe1B
        • 2.Be3#
        • 2.Rexf4#
      • 1...dxe1R
        • 2.Rexf4#
      • 1...hxg1Q
        • 2.Qxf4#
      • 1...hxg1S
        • 2.Qh4#
      • 1...hxg1B
        • 2.Qxf4#
        • 2.Qh4#
      • 1...hxg1R
        • 2.Qxf4#
      • 1...Qe6
        • 2.Rfxf4#
      • 1...Qh7
        • 2.Rfxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);P_PINP(g),XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(B)::R1(E)
        • P(c);XB(A)::S(B),XP(f)
        • P(c);::S(B),XP(f)
        • Q(k);N_GUARD::R(G),XP(g)
        • S(a);::S(B),XP(f)
      • Refutation
        • R(b);XS(C)
    • Try
      • S(C);P_PINP(g)
      • Threat
        • S(B),XP(f)
      • Vars
        • Q(k);N_GUARD,XB(D)::R(G),XP(g)
        • R(b);SBLOCK,XS(B)::QAR2(F),XP(g)
        • P(e);SBLOCK,XS(B)::QAR2(F),XP(g)
        • Q(k);N_GUARD::R(G),XP(g)
      • Refutation
        • P(e);XS(B)
  • Actual
    • S(C);P_PINP(g)
    • Threat
      • S(B),XP(f)
    • Vars
      • Q(k);N_GUARD,XB(D)::R(G),XP(g)
      • R(b);SBLOCK,XS(B)::QAR2(F),XP(g)
      • P(c);SBLOCK,XS(C)::R(E),XP(g)
      • P(c);OGATE,SBLOCK,XS(C)::B(A)
      • P(e);SBLOCK,XS(B)::QAR2(F),XP(g)
      • P(e);SBLOCK,XS(B)::QAB(F)
      • Q(k);N_GUARD::R(G),XP(g)
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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).