MESON Chess Problem Database

Problem Display
PID: 274910 (8/4N3/K1P2Bp1/1NR2R2/3Pk3/1p4qr/2bPP1P1/8 w - - 0 1)

Popa, Nicolae

Sachova skladba, 2023

8/4N3/K1P2Bp1/1NR2R2/3Pk3/1p4qr/2bPP1P1/8

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qf2
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qh4
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qe5
      • 2.Rcxe5#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qxg2
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qc3
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qd3
      • 2.Rce5#
    • 1...Qe3
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qf3
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qg4
      • 2.Sd6#
      • 2.Rce5#
    • 1...Qg5
      • 2.Sd6#
      • 2.Rce5#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sd6#
      • 1...Qxe5
        • 2.Rcxe5#
      • 1...Qd3
        • 2.Rf4#
      • 1...Bd3!
    • 1.Rf3?
      • threat
        • 2.Sc3#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Bd3
        • 2.exd3#
      • 1...Qxf3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.d5#
      • 1...Qf2
        • 2.Sd6#
      • 1...Qe5
        • 2.dxe5#
      • 1...Qc3
        • 2.Sd6#
      • 1...Qd3
        • 2.Sd6#
      • 1...Qe3
        • 2.Sd6#
      • 1...Bd3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::R1(F),XQ(c)
    • Q(c);N_GUARD,P_PINP(I)::S(E),XQ(c)
    • Q(c);N_GUARD,P_PINS(E)::R1(F)
  • Tries
    • Try
      • B(J);
      • Threat
        • S(E)
      • Vars
        • Q(c);OGATE,XB(J)::R1(F),XQ(c)
        • Q(c);N_GUARD,P_PINS(E)::R1(G)
      • Refutation
        • B(a);P_PINS(E)
    • Try
      • R(G);
      • Threat
        • S(E)
      • Vars
        • Q(c);N_GUARD::R1(F),XQ(c)
        • B(a);OGATE,P_PINS(E)::P(B),XB(a)
      • Refutation
        • Q(c);XR(G)
  • Actual
    • R(F);
    • Threat
      • R(F)+P(D)
    • Vars
      • Q(c);N_GUARD::S(E)
      • Q(c);OGATE::R(F)+P(D),XQ(c)
      • B(a);S_CUTQ(c)::S(E)
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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).