MESON Chess Problem Database

Problem Display
PID: 96449 (5b2/3p3r/N4RNp/3k1P2/6QK/BP2p3/2rpn1P1/1n6 w - - 0 1)

Kalugin, Yuri Vladimirovich

Problemas, 1980

5b2/3p3r/N4RNp/3k1P2/6QK/BP2p3/2rpn1P1/1n6

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sc7#
      • 2.Qc4#
    • 1...Rb2
      • 2.Sc7#
      • 2.Qc4#
    • 1...Rc4
      • 2.Qxc4#
      • 2.bxc4#
    • 1...Rc5
      • 2.Sb4#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Re7
      • 2.Rd6#
    • 1...Bc5
      • 2.Sc7#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Bg7
      • 2.Rd6#
    • 1...Sbc3
      • 2.Sc7#
      • 2.Qc4#
    • 1...Sec3
      • 2.Sc7#
      • 2.Qc4#
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qf3#
      • 1...Rxc5
        • 2.Sb4#
      • 1...Bxc5
        • 2.Sc7#
      • 1...Rc4
        • 2.Qxc4#
        • 2.bxc4#
      • 1...Re7
        • 2.Rd6#
      • 1...Sbc3
        • 2.Qc4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sec3
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);SBLOCK,S_CUTB(j)::S(G)
    • R(b);N_GUARD::S(G),XR(b)
    • R(i);S_CUTB(j)::R1(H)
    • B(j);S_CUTR(b)::S(G)
    • B(j);N_GUARD::R1(H),XB(j)
    • B(j);N_GUARD::R1(H)
  • Actual
    • B(B);
    • Threat
      • QAB(D)
    • Vars
      • R(b);SBLOCK,XB(B)::S(G)
      • B(j);SBLOCK,XB(B)::S(G)
      • R(i);S_CUTB(j)::R1(H)
      • S(a);S_CUTR(b)::QAB1(D)
      • S(d);N_GUARD::QAR1(D)
      • S(d);N_GUARD::QAR1(D),XS(d)
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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).