MESON Chess Problem Database

Problem Display
PID: 270726 (4R2Q/1K6/3B4/3p2p1/2PRn2p/3Nk3/2n1rpP1/1N3B2 w - - 0 1)

Moen, Kabe

Die Schwalbe, 2023

4R2Q/1K6/3B4/3p2p1/2PRn2p/3Nk3/2n1rpP1/1N3B2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Rexe4#
    • 1...g4
      • 2.Bf4#
  • Tries
    • 1.Be7?
      • threat
        • 2.Bxg5#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...Sd6+
        • 2.Bxd6#
      • 1...Sf6
        • 2.Bxf6#
      • 1...g4
        • 2.Bg5#
      • 1...Sxd4!
    • 1.Rdxe4+?
      • 1...Kxd3
        • 2.Bxe2#
        • 2.Qc3#
      • 1...dxe4!
  • Keys
    • 1.Bc5!
      • 1...Sxd4
        • 2.Qxd4#
      • 1...dxc4
        • 2.Rexe4#
      • 1...Re1
        • 2.Rdxe4#
      • 1...Rd2
        • 2.Rdxe4#
      • 1...Sa1
        • 2.Rxd5#
      • 1...Se1
        • 2.Rxd5#
      • 1...Sa3
        • 2.Rxd5#
      • 1...Sb4
        • 2.Rxd5#
      • 1...h3
        • 2.Qxh3#
      • 1...g4
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD,XP(E)::R1(I),XS(e)
    • P(h);N_GUARD::B(G)
  • Tries
    • Try
      • B(G);N_PINS(e)
      • Threat
        • B(G),XP(h)
      • Vars
        • S(e);CHECK,OGATEB::R(I)+B(G),XS(e)
        • S(e);OGATEB::R(I)+B(G),XS(e)
        • P(h);::B(G)
      • Refutation
        • S(a);XR(F)
    • Try
      • R(F);CHECK,XS(e)
      • Refutation
        • P(g);P_SPINP(g),XR(F)
  • Actual
    • B(G);
    • Vars
      • S(a);N_SPINS(e),OGATE,P_SPINS(a),XR(F)::QAB1(J),XS(a)
      • P(g);N_GUARD,XP(E)::R1(I),XS(e)
      • R(b);::B(G)+R(F),DCHECK,XS(e)
      • S(a);N_GUARD::B(G)+R(F),XP(g)
      • P(f);OGATE::QAR(J),XP(f)
      • P(h);OGATEB::QAB(J)
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).