MESON Chess Problem Database

Problem Display
PID: 250153 (5R2/1p3rrp/bK3kN1/1pQ1N1p1/2p3B1/3p4/2q2b2/5R1n w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1927

5R2/1p3rrp/bK3kN1/1pQ1N1p1/2p3B1/3p4/2q2b2/5R1n

#2

7 + 13

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Rxf7#
    • 1...Rg8
      • 2.Rxf7#
    • 1...hxg6
      • 2.Sd7#
  • Tries
    • 1.Se7?
      • threat
        • 2.Sd7#
      • 1...Rg6
        • 2.Rxf7#
      • 1...Rg8
        • 2.Rxf7#
      • 1...Rxf8!
    • 1.Sh8?
      • threat
        • 2.Sd7#
      • 1...Rg6
        • 2.Rxf7#
      • 1...Rg8
        • 2.Rxf7#
      • 1...Rxf8!
    • 1.Rxf2+?
      • 1...Sxf2
        • 2.Qd6#
        • 2.Qe7#
      • 1...Qxf2!
  • Keys
    • 1.Ka7!
      • threat
        • 2.Qb6#
      • 1...b6+
        • 2.Qe7#
      • 1...Rxg6
        • 2.Rxf7#
      • 1...hxg6
        • 2.Sd7#
      • 1...Rg8
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(l);N_GUARD,XS(F)::R1(G),XR(k)
    • R(l);N_GUARD::R1(G),XR(k)
    • P(m);SBLOCK,XS(F)::S(D)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • R(l);N_GUARD::R1(G),XR(k)
      • Refutation
        • R(k);N_SPINR(k),XR(G)
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • R(l);N_GUARD::R1(G),XR(k)
      • Refutation
        • R(k);N_SPINR(k),XR(G)
    • Try
      • R(A);CHECK,N_SPINQ(C),XB(c)
      • Refutation
        • Q(b);P_PINQ(C),XR(A)
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • QAR(C)
    • Vars
      • P(j);CHECK,N_PINQ(C)::QAB1(C)
      • R(l);N_GUARD,XS(F)::R1(G),XR(k)
      • P(m);SBLOCK,XS(F)::S(D)
      • R(l);N_GUARD::R1(G),XR(k)
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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).