MESON Chess Problem Database

Problem Display
PID: 195300 (Rb6/B1p3p1/1n4p1/4k1p1/6B1/2N3N1/7p/2KR1Qnr w - - 0 1)

Kooper, J

Haagsche Courant, 1910

(First published on Mon Feb 21 1910)

Rb6/B1p3p1/1n4p1/4k1p1/6B1/2N3N1/7p/2KR1Qnr

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa7
      • 2.Re8#
    • 1...Sa4
      • 2.Rd5#
    • 1...Sc4
      • 2.Rd5#
    • 1...Sd5
      • 2.Rxd5#
    • 1...Sd7
      • 2.Rd5#
    • 1...Sxa8
      • 2.Rd5#
    • 1...Sc8
      • 2.Rd5#
    • 1...c5
      • 2.Bxb8#
    • 1...c6
      • 2.Bxb8#
  • Tries
    • 1.Qe1+?
      • 1...Kf4
        • 2.Rd4#
      • 1...Kf6
        • 2.Qe6#
      • 1...Se2+!
  • Keys
    • 1.Sh5!
      • 1...Se2+
        • 2.Qxe2#
      • 1...Bxa7
        • 2.Re8#
      • 1...Sxa8
        • 2.Rd5#
      • 1...gxh5
        • 2.Qf5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sf3
        • 2.Qe2#
      • 1...Sh3
        • 2.Qe2#
      • 1...Sa4
        • 2.Rd5#
      • 1...Sc4
        • 2.Rd5#
      • 1...Sd7
        • 2.Rd5#
      • 1...Sc8
        • 2.Rd5#
      • 1...c5
        • 2.Bxb8#
      • 1...c6
        • 2.Bxb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(j);OGATE,XB(G)::R(H)
    • S(f);N_GUARD::R1(B)
    • S(f);N_GUARD::R1(B),XS(f)
    • S(f);N_GUARD,XR(H)::R1(B)
    • P(h);OGATEB::B(G),XB(j)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::R(B)
        • K(d);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • S(a);CHECK,P_SPINS(a)
  • Actual
    • S(E);
    • Vars
      • S(a);CHECK,N_GUARD::QAR(C),XS(a)
      • B(j);OGATE,XB(G)::R(H)
      • S(f);N_GUARD,XR(H)::R1(B)
      • P(g);N_GUARD,XS(E)::QAR1(C)
      • S(f);N_GUARD::R1(B),XS(f)
      • S(a);N_GUARD::QAR(C)
      • S(f);N_GUARD::R1(B)
      • P(h);OGATEB::B(G),XB(j)
HTML5 logo

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).