MESON Chess Problem Database

Problem Display
PID: 274555 (8/5p2/3p1Q2/8/1Pp1pN2/3Nk1Pp/3p3K/1n1B3n w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Pat a Mat, 2023

8/5p2/3p1Q2/8/1Pp1pN2/3Nk1Pp/3p3K/1n1B3n

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Sd5#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Sd5#
      • 1...Kf2
        • 2.Sg2#
      • 1...d5
        • 2.Sxd5#
      • 1...Sc3!
    • 1.Sf2?
      • threat
        • 2.Sg4#
        • 2.Sd5#
      • 1...Kxf2
        • 2.Sg2#
      • 1...Sc3
        • 2.Sg4#
      • 1...d5
        • 2.Sg4#
        • 2.Sxd5#
      • 1...Sxf2!
    • 1.Se6?
      • threat
        • 2.Qd4#
      • 1...Kxd3
        • 2.Qd4#
      • 1...fxe6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sg4#
      • 1...Kf2
        • 2.Sg2#
      • 1...Kd4
        • 2.Sg4#
      • 1...dxe5
        • 2.Qb6#
      • 1...Sf2
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK,XS(C)::S(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(F)
      • Vars
        • K(d);S_CUTP(e),S_FLIGHT::QAR(G)+S(F)
        • P(h);::S(F),XP(h)
      • Refutation
        • S(a);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_CUTP(e),S_FLIGHT,XS(C)::QAR(G)+S(F)
        • S(a);::S(C)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(F);
      • Threat
        • QAB1(G)
      • Vars
        • K(d);P-FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • P(i);XS(F)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(d);N_GUARD,S_CUTP(e),S_FLIGHT::QAR(G)+S(F)
      • K(d);S_FLIGHT::QAB(G)+S(C)
      • P(h);OGATE,XS(C)::QAB(G)
      • S(b);SBLOCK::S(C),XP(f)
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).