MESON Chess Problem Database

Problem Display
PID: 226721 (b1n3N1/2p5/1p5R/2bk1P2/r2P4/p3P1B1/2Q2R2/6K1 w - - 0 1)

Handloser, Ralf Chris

Die Schwalbe, 2020

b1n3N1/2p5/1p5R/2bk1P2/r2P4/p3P1B1/2Q2R2/6K1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Sf6#
    • 1...Bxd4
      • 2.e4#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bf8
      • 2.Sf6#
    • 1...Bc6
      • 2.Sf6#
    • 1...Sd6
      • 2.Se7#
    • 1...c6
      • 2.Sf6#
  • Tries
    • 1.Rd6+?
      • 1...Bxd6
        • 2.Sf6#
      • 1...Sxd6
        • 2.Se7#
      • 1...cxd6!
    • 1.Re6?
      • threat
        • 2.Sf6#
      • 1...Bxd4
        • 2.e4#
      • 1...Sd6
        • 2.Se7#
      • 1...Be7!
    • 1.Qb3+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Rf4#
        • 2.Rh4#
        • 2.Re6#
      • 1...Rc4!
  • Keys
    • 1.Rd2!
      • threat
        • 2.e4#
      • 1...Bxd4
        • 2.Sf6#
      • 1...Sd6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • B(c);::S(I)
    • B(c);SBLOCK,XP(F)::P(D)
    • B(g);SBLOCK::S(I)
    • S(h);N_GUARD,S_CUTB(c)::S(I)
    • P(f);SBLOCK::S(I)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • B(c);XR(H)::S(I)
        • S(h);XR(H)::S(I)
      • Refutation
        • P(f);XR(H)
    • Try
      • R(H);
      • Threat
        • S(I)
      • Vars
        • B(c);SBLOCK,XP(F)::P(D)
        • S(h);N_GUARD,S_CUTB(c)::S(I)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • R(C);
    • Threat
      • P(D)
    • Vars
      • B(c);P_PINP(D),P_SPINB(c),XP(F)::S(I)
      • S(h);N_GUARD,S_CUTB(c)::S(I)
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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).