MESON Chess Problem Database

Problem Display
PID: 263913 (K1B4B/2p1R2b/P3r3/3N4/PPkN4/2pp1Q2/P2RP2b/3r4 w - - 0 1)

Parcerisa, Jose Antonio Lopez

Coello-75 JT (Problemas), 2017

K1B4B/2p1R2b/P3r3/3N4/PPkN4/2pp1Q2/P2RP2b/3r4

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa6+
      • 2.Bxa6#
    • 1...Rg6
      • 2.exd3#
    • 1...Bg8
      • 2.exd3#
  • Tries
    • 1.Rxc7+?
      • 1...Rc6
        • 2.Rxc6#
      • 1...Bxc7!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sa3#
      • 1...Rxa6+
        • 2.Bxa6#
      • 1...dxc2
        • 2.Qxc3#
      • 1...Re4
        • 2.Qxd3#
      • 1...Be4
        • 2.Se3#
      • 1...Re5
        • 2.Rxc7#
      • 1...Rf6
        • 2.Sde3#
      • 1...Be5
        • 2.Sde3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);CHECK,OGATE,XP(I)::B(L),XR(f)
    • R(f);S_CUTB(h)::P(C),XP(d)
    • B(h);N_GUARD::P(C),XP(d)
  • Tries
    • Try
      • R(J);CHECK,XP(g)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::R(J),XR(f)
      • Refutation
        • B(b);XR(J)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(f);CHECK,OGATE,XP(I)::B(L),XR(f)
      • P(d);OGATE,XS(G)::QAR1(D),XP(c)
      • R(f);S_CUTB(h)::QAB1(D),XP(d)
      • B(h);P_PINS(H),S_CUTR(f)::S(G)
      • R(f);N_GUARD,S_CUTB(b)::R(J),XP(g)
      • R(f);N_GUARD::S(H)
      • B(b);S_CUTR(f)::S(H)
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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).