MESON Chess Problem Database

Problem Display
PID: 97180 (1B1n1r2/1R4Nn/b4k1P/4p2K/r5P1/4pB2/Q7/5R2 w - - 0 1)

ten Cate, Pieter

Problem (Zagreb), 1952

1B1n1r2/1R4Nn/b4k1P/4p2K/r5P1/4pB2/Q7/5R2

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Be2#
    • 1...Ra3
      • 2.Be2#
    • 1...Rc4
      • 2.Be4#
    • 1...Ra5
      • 2.Be2#
    • 1...Rf7
      • 2.Se8#
    • 1...Re8
      • 2.Sxe8#
    • 1...Bc4
      • 2.Be2#
    • 1...Sc6
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sxb7
      • 2.Qe6#
    • 1...Sf7
      • 2.Qe6#
    • 1...e4
      • 2.Be2#
  • Tries
    • 1.Rb6+?
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Ke7!
    • 1.Rf7+?
      • 1...Sxf7
        • 2.Qe6#
      • 1...Rxf7!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Be7#
      • 1...Rxa2
        • 2.Be2#
      • 1...Bxb7
        • 2.Be4#
      • 1...Sxb7
        • 2.Qe6#
      • 1...Rc4
        • 2.Be4#
      • 1...Rf7
        • 2.Se8#
      • 1...Re8
        • 2.Sxe8#
      • 1...Bc4
        • 2.Be2#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...e4
        • 2.Be2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD,XQ(B)::R(A)+B(C)
    • R(b);N_GUARD::R(A)+B(C)
    • R(b);S_CUTB(d)::R(A)+B(C)
    • R(h);N_GUARD::S(H)
    • R(h);N_GUARD::S(H),XR(h)
    • B(d);S_CUTR(b)::R(A)+B(C)
    • S(g);N_GUARD::QAR1(B)
    • S(g);N_GUARD::QAR1(B),XS(g)
    • S(g);N_GUARD,XR(G)::QAR1(B)
    • P(c);S_CUTR(b)::R(A)+B(C)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR1(B)
        • S(g);N_GUARD,P_SPINS(g)::QAR1(B),XS(g)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • S(g);XR(G)::QAR1(B)
      • Refutation
        • R(h);XR(G)
  • Actual
    • B(I);
    • Threat
      • B(I)
    • Vars
      • R(b);N_GUARD,XQ(B)::R(A)+B(C)
      • B(d);N_GUARD,XR(G)::R(A)+B(C)
      • S(g);N_GUARD,XR(G)::QAR1(B)
      • R(b);S_CUTB(d)::R(A)+B(C)
      • R(h);N_GUARD::S(H)
      • R(h);N_GUARD::S(H),XR(h)
      • B(d);S_CUTR(b)::R(A)+B(C)
      • S(g);N_GUARD::QAR1(B)
      • S(g);N_GUARD::QAR1(B),XS(g)
      • P(c);S_CUTR(b)::R(A)+B(C)
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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).