MESON Chess Problem Database

Problem Display
PID: 187927 (8/3nN2p/4R3/1r2b3/1r2kp2/1pQ5/1KnP4/4N2R w - - 0 1)

van Dijk, Johannes

Source?, 1910

8/3nN2p/4R3/1r2b3/1r2kp2/1pQ5/1KnP4/4N2R

#2

7 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qf3#
    • 1...Sxe1
      • 2.Rxe1#
    • 1...Se3
      • 2.d3#
    • 1...Sd4
      • 2.Qd3#
    • 1...Sc5
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...f3
      • 2.Rh4#
  • Tries
    • 1.Sxc2?
      • threat
        • 2.Re1#
      • 1...f3
        • 2.Rh4#
      • 1...bxc2+!
    • 1.Rxe5+?
      • 1...Rxe5
        • 2.Qd3#
      • 1...Sxe5!
  • Keys
    • 1.d4!
      • threat
        • 2.Qd3#
      • 1...Rxd4
        • 2.Qf3#
      • 1...Sxe1
        • 2.Rxe1#
      • 1...f3
        • 2.Rh4#
      • 1...Sc5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);N_PINQ(E),SBLOCK::QAB1(E)
    • S(a);OGATE,XS(A)::R(B),XS(a)
    • S(a);SBLOCK::P(D)
    • S(a);N_PINQ(E)::QAB1(E)
    • P(e);OGATEB::R(B)
  • Tries
    • Try
      • S(A);XS(a)
      • Threat
        • R(B)
      • Vars
        • P(e);OGATEB::R(B)
      • Refutation
        • P(b);CHECK,XS(A)
    • Try
      • R(F);CHECK,N_SPINQ(E),XB(g)
      • Vars
        • R(f);SBLOCK,XR(F)::QAB1(E)
      • Refutation
        • S(h);XR(F)
  • Actual
    • P(D);N_SPINQ(E)
    • Threat
      • QAB1(E)
    • Vars
      • R(c);SBLOCK,XP(D)::QAB1(E)
      • S(a);OGATE,XS(A)::R(B),XS(a)
      • P(e);OGATEB::R(B)
      • S(h);N_GUARD,S_CUTR(f)::R1(F),XB(g)
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).