MESON Chess Problem Database

Problem Display
PID: 233567 (2R1Q1R1/3n3r/3NN3/3b4/k2b4/p2p1p1p/P1rB4/3B1K2 w - - 0 1)

Witt, Andreas

Freie Presse, 1995

2R1Q1R1/3n3r/3NN3/3b4/k2b4/p2p1p1p/P1rB4/3B1K2

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sc5#
    • 1...Bb2
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Be5
      • 2.Sc5#
    • 1...Bf6
      • 2.Sc5#
    • 1...Bg7
      • 2.Sc5#
    • 1...Bh8
      • 2.Sc5#
    • 1...Bc4
      • 2.Rxc4#
    • 1...Be4
      • 2.Rc4#
    • 1...Bb7
      • 2.Rc4#
    • 1...Ba8
      • 2.Rc4#
  • Tries
    • 1.Bxc2+?
      • 1...Bb3
        • 2.Bxb3#
        • 2.Rc4#
        • 2.axb3#
      • 1...dxc2!
    • 1.Ra8+?
      • 1...Ba7
        • 2.Sc5#
        • 2.Rxa7#
      • 1...Bxa8!
    • 1.Qxd7+?
      • 1...Bc6
        • 2.Qxc6#
      • 1...Rxd7!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Sc5#
      • 1...Bxe6
        • 2.Ra8#
      • 1...Bb3
        • 2.Ra8#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Be4
        • 2.Rc4#
      • 1...Bc6
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • B(g);N_GUARD::S(F)
    • B(g);N_GUARD::S(F),XB(g)
    • B(h);N_GUARD::R(G),XB(h)
    • B(h);N_GUARD::R(G)
  • Tries
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • P(c);XB(A)
    • Try
      • R(G);CHECK
      • Refutation
        • B(h);XR(G)
    • Try
      • Q(H);CHECK,XS(i)
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::QAB(H),XB(h)
      • Refutation
        • R(j);XQ(H)
  • Actual
    • R(I);P_PINB(g)
    • Threat
      • S(F)
    • Vars
      • B(h);N_GUARD,XS(F)::R(G)
      • B(h);N_GUARD,N_SPINR(a)::R(G)
      • B(h);N_GUARD,N_SPINB(g)::R(G),XB(h)
      • B(h);N_GUARD,N_SPINB(g)::R(G)
      • B(h);N_GUARD,N_SPINS(i)::R(I),XB(g)
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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).