MESON Chess Problem Database

Problem Display
PID: 93304 (n7/BN2pBn1/4R1P1/1kp5/2rp4/Q1bp4/3p4/3K4 w - - 0 1)

Groeneveld, Cornelis

Arbejder-Skak, 1955

n7/BN2pBn1/4R1P1/1kp5/2rp4/Q1bp4/3p4/3K4

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qxc5#
    • 1...Rb4
      • 2.Qa6#
    • 1...Ba1
      • 2.Qa5#
    • 1...Bb2
      • 2.Qa5#
    • 1...Bb4
      • 2.Qa6#
    • 1...Ba5
      • 2.Qxa5#
    • 1...Sf5
      • 2.Be8#
    • 1...Sh5
      • 2.Be8#
    • 1...Sxe6
      • 2.Be8#
    • 1...Se8
      • 2.Bxe8#
    • 1...Sb6
      • 2.Rxb6#
    • 1...Sc7
      • 2.Rb6#
  • Keys
    • 1.Ra6!
      • 1...Ra4
        • 2.Qxa4#
      • 1...Ba5
        • 2.Qxa5#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Ba1
        • 2.Qa5#
      • 1...Rb4
        • 2.Qa5#
      • 1...Bb2
        • 2.Qa5#
      • 1...Bb4
        • 2.Qa4#
      • 1...Sf5
        • 2.Be8#
      • 1...Sh5
        • 2.Be8#
      • 1...Se6
        • 2.Be8#
      • 1...Se8
        • 2.Bxe8#
      • 1...Sc7
        • 2.Rb6#
      • 1...e5
        • 2.Sd6#
      • 1...e6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,SBLOCK::QAR1(B),XP(g)
    • R(d);SBLOCK::QAB1(B)
    • B(b);N_GUARD::QAR1(B)
    • B(b);SBLOCK::QAB1(B)
    • B(b);N_GUARD::QAR1(B),XB(b)
    • S(i);N_GUARD::B(G)
    • S(i);N_GUARD,XR(C)::B(G)
    • S(i);N_GUARD::B(G),XS(i)
    • S(j);N_GUARD::R1(C),XS(j)
    • S(j);N_GUARD::R1(C)
  • Actual
    • R(C);
    • Vars
      • R(d);N_GUARD::QAB1(B),XR(d)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • S(j);N_GUARD::R1(C),XS(j)
      • B(b);N_GUARD::QAR1(B)
      • R(d);S_CUTB(b)::QAR1(B)
      • B(b);S_CUTR(d)::QAB1(B)
      • S(i);N_GUARD::B(G)
      • S(i);N_GUARD::B(G),XS(i)
      • S(j);N_GUARD::R1(C)
      • P(h);N_GUARD::S(F)
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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).