MESON Chess Problem Database

Problem Display
PID: 182330 (rRn4K/8/1n6/2P1Q2p/B2R4/p1Nb3r/p3N3/k7 w - - 0 1)

White, Alain Campbell

San Francisco Chronicle, 1906

rRn4K/8/1n6/2P1Q2p/B2R4/p1Nb3r/p3N3/k7

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Keys
    • 1.Se4!
      • threat
        • 2.Rb4#
      • 1...Kb1
        • 2.Rb4#
      • 1...Kb2
        • 2.Rb4#
      • 1...Bxe2
        • 2.Rd1#
      • 1...Bxe4
        • 2.Rd1#
      • 1...Sxa4
        • 2.Rxa4#
      • 1...Bb1
        • 2.Rd3#
      • 1...Bc2
        • 2.Rd1#
      • 1...Bc4
        • 2.Rd1#
      • 1...Bb5
        • 2.Rd1#
      • 1...Ba6
        • 2.Rd1#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sd7
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(B);
    • Threat
      • QAB(F)+R(D)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(g)::R(D)
      • K(a);P_SPINS(g),S_FLIGHT::QAB(F)+R(D),DCHECK
      • B(d);OGATE,XS(A)::QAB(F)+R(D),DCHECK
      • B(d);OGATE,XS(B)::QAB(F)+R(D),DCHECK
      • S(g);OGATE,XB(C)::QAB(F)+R(D),XS(g)
      • B(d);SBLOCK::QAB(F)+R(D)
      • B(d);OGATE::QAB(F)+R(D),DCHECK
      • S(g);::QAB(F)+R(D),XS(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).