MESON Chess Problem Database

Problem Display
PID: 177504 (n1B1R2r/1N2nP2/4P1p1/1PNkpb2/1Q2p2R/rp2p3/8/bK6 w - - 0 1)

Simoni, Francesco

4th HM., Coello-75 JT (Problemas), 2017

n1B1R2r/1N2nP2/4P1p1/1PNkpb2/1Q2p2R/rp2p3/8/bK6

#2

10 + 12

4901 Best Problems 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh4
      • 2.Rd8#
    • 1...Rh5
      • 2.Rd8#
    • 1...Rh6
      • 2.Rd8#
    • 1...Rh7
      • 2.Rd8#
    • 1...Bh3
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qxe4#
    • 1...Bxe6
      • 2.Bxe6#
      • 2.Qxe4#
    • 1...Sg8
      • 2.Rd8#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.Qc5#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Rxh4
        • 2.Rd8#
      • 1...Bg4
        • 2.Sf6#
      • 1...Bd4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Kxe6
        • 2.Qc4#
      • 1...Sg8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(l);N_GUARD,XR(C)::R(J)
    • R(l);N_GUARD::R(J)
    • B(h);N_GUARD::QAB1(B),XP(e)
    • S(j);S_CUTR(l)::R(J)
  • Tries
    • Try
      • S(E);P_SPINS(E),XP(e)
      • Threat
        • QAR1(B)
      • Vars
        • B(h);CHECK,OGATE,XS(E)::QAB1(B),XB(h)
        • R(l);N_GUARD,XR(C)::R(J)
        • B(h);N_PINS(E)::S(E)
      • Refutation
        • B(a);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(f);P_SPINS(j),S_FLIGHT,XP(F)::QAB(B)
      • S(j);::QAR1(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).