MESON Chess Problem Database

Problem Display
PID: 264044 (r3k3/pp4Qn/7B/2p3p1/2R3P1/3N4/4B3/3KR3 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd KNSB, 1937

r3k3/pp4Qn/7B/2p3p1/2R3P1/3N4/4B3/3KR3

#2

8 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Bf1#
      • 2.Bf3#
      • 2.Re4#
  • Tries
    • 1.Se5?
      • threat
        • 2.Qd7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Sf6
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
      • 1...Rd8+!
    • 1.Rd4?
      • threat
        • 2.Bf1#
        • 2.Bf3#
        • 2.Qd7#
      • 1...Rd8
        • 2.Bf1#
        • 2.Bf3#
        • 2.Re4#
      • 1...Sf6
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
      • 1...cxd4!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qd7#
      • 1...Rd8+
        • 2.Bd3#
      • 1...Kd8
        • 2.Qd7#
      • 1...Sf6
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);P-FLIGHT::QAR1(H)
        • S(e);N_GUARD::QAR1(H)
        • S(e);N_GUARD::QAR1(H),XS(e)
      • Refutation
        • R(f);CHECK
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(e);N_GUARD::QAR1(H)
        • S(e);N_GUARD::QAR1(H),XS(e)
      • Refutation
        • P(a);XR(E)
  • Actual
    • S(D);XP(a)
    • Threat
      • QAB1(H)
    • Vars
      • R(f);CHECK,SBLOCK::R(B)+B(C)
      • K(g);P-FLIGHT::QAR1(H)
      • S(e);N_GUARD::QAR1(H)
      • S(e);N_GUARD::QAR1(H),XS(e)
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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).