MESON Chess Problem Database

Problem Display
PID: 235045 (4N3/KB6/Np4n1/1k6/1Pr4q/1P1r4/8/5Q2 w - - 0 1)

Erokhin, Vladimir Alekseevich

Hlas l'udu, 1996

4N3/KB6/Np4n1/1k6/1Pr4q/1P1r4/8/5Q2

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sec7#
    • 1...Rd2
      • 2.Sec7#
    • 1...Rdc3
      • 2.Sd6#
      • 2.Sec7#
    • 1...Re3
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rf3
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rg3
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rh3
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rdd4
      • 2.Sec7#
    • 1...Rd5
      • 2.Sec7#
    • 1...Rd6
      • 2.Sxd6#
      • 2.Sec7#
    • 1...Rd8
      • 2.Sec7#
    • 1...Rc1
      • 2.Sd6#
    • 1...Rc2
      • 2.Sd6#
    • 1...Rcc3
      • 2.Sd6#
    • 1...Rcd4
      • 2.Sec7#
    • 1...Re4
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rf4
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rg4
      • 2.Sd6#
      • 2.Sec7#
    • 1...Rc5
      • 2.Sd6#
    • 1...Rc7
      • 2.Sd6#
      • 2.Sexc7#
    • 1...Rc8
      • 2.Sd6#
  • Tries
    • 1.Qxd3?
      • threat
        • 2.Sd6#
        • 2.Sec7#
      • 1...Qg3
        • 2.Qxc4#
      • 1...Qf6
        • 2.Sec7#
        • 2.Qxc4#
      • 1...Qe7
        • 2.Qxc4#
      • 1...Qd8
        • 2.Qxc4#
      • 1...Qh2
        • 2.Qxc4#
      • 1...Qd4
        • 2.Sec7#
      • 1...Qh7
        • 2.Sd6#
        • 2.Qxc4#
      • 1...Qf4!
    • 1.Qf5+?
      • 1...Rd5
        • 2.Sd6#
      • 1...Rc5
        • 2.Sec7#
      • 1...Se5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa4#
      • 1...Rxb3
        • 2.Sd6#
      • 1...Rxb4
        • 2.Sec7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(a);P_SPINR(b)::S(G)
    • R(b);P_SPINR(a)::S(G)
    • R(b);N_GUARD,P_SPINR(a)::S(G)
  • Tries
    • Try
      • Q(A);P_PINR(b),XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);N_GUARD::QAB1(A),XR(b)
        • Q(c);N_GUARD,P_PINB(F)::QAB1(A),XR(b)
        • Q(c);::S(G)
      • Refutation
        • Q(c);
    • Try
      • Q(A);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(G)
        • R(b);P_SPINR(b)::S(G)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(a);N_GUARD,XP(B)::S(G)
      • R(b);N_GUARD,XP(C)::S(G)
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).