MESON Chess Problem Database

Problem Display
PID: 203512 (n5B1/b2Q1r1p/3p2b1/R1pkpnR1/8/N1PP3N/5K2/8 w - - 0 1)

Pasqualini, Giulio

4th HM., L'Italia Scacchistica, 1924

n5B1/b2Q1r1p/3p2b1/R1pkpnR1/8/N1PP3N/5K2/8

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se3+
      • 2.Sf4#
    • 1...Sg3+
      • 2.Sf4#
    • 1...Sd4+
      • 2.Sf4#
    • 1...Sh4+
      • 2.Sf4#
    • 1...Sh6+
      • 2.Sf4#
    • 1...Se7+
      • 2.Sf4#
    • 1...Sg7+
      • 2.Sf4#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sb4#
        • 2.c4#
      • 1...Se3+
        • 2.Sf4#
      • 1...Sg3+
        • 2.Sf4#
      • 1...Sd4+
        • 2.Sf4#
      • 1...Sh4+
        • 2.Sf4#
      • 1...Sh6+
        • 2.Sf4#
      • 1...Se7+
        • 2.Sf4#
      • 1...Sg7+
        • 2.Sf4#
      • 1...Sb6
        • 2.Sb4#
      • 1...e4!
    • 1.Rxc5+?
      • 1...Kxc5
        • 2.Qb5#
      • 1...Bxc5+!
  • Keys
    • 1.Sb5!
      • threat
        • 2.c4#
      • 1...Se3+
        • 2.Sf4#
      • 1...Sg3+
        • 2.Sf4#
      • 1...Sd4+
        • 2.Sf4#
      • 1...Sh4+
        • 2.Sf4#
      • 1...Sh6+
        • 2.Sf4#
      • 1...Se7+
        • 2.Sf4#
      • 1...Sg7+
        • 2.Sf4#
      • 1...c4+
        • 2.Sxa7#
      • 1...e4
        • 2.Qxd6#
      • 1...Sb6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);CHECK,S_CUTP(c)::S(E)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);CHECK,S_CUTP(c)::S(E)
        • S(j);::S(B)
      • Refutation
        • P(c);P_SPINS(d)
    • Try
      • R(F);CHECK,P_PINP(e),P_SPINR(F),XP(a)
      • Vars
        • K(b);N_SPINP(e),N_SPINR(h),P-FLIGHT,XR(F)::QAR1(H)
      • Refutation
        • B(g);CHECK,XR(F)
  • Actual
    • S(B);N_PINP(a),P_PINP(e)
    • Threat
      • P(C)
    • Vars
      • S(d);CHECK,N_SPINP(e),P_SPINP(c)::S(E)
      • P(a);CHECK::R(F)+S(B),XB(g)
      • P(c);P_SPINS(d)::QAR1(H),XP(e)
      • S(j);N_GUARD::S(B)
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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).