MESON Chess Problem Database

Problem Display
PID: 245886 (5Rn1/3N3R/2p1k2p/3r1N2/2n5/1B2p2K/Q7/8 w - - 0 1)

Groeneveld, Cornelis

Shakhmatna misl, 1954

5Rn1/3N3R/2p1k2p/3r1N2/2n5/1B2p2K/Q7/8

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sc5#
    • 1...Sd6
      • 2.Sd4#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Se7
      • 2.Rxe7#
  • Tries
    • 1.Sc5+?
      • 1...Ke5
        • 2.Qh2#
      • 1...Rxc5!
    • 1.Bxc4?
      • 1...Sf6
        • 2.Rxf6#
      • 1...Se7
        • 2.Rxe7#
      • 1...e2
        • 2.Qxe2#
      • 1...c5
        • 2.Bxd5#
        • 2.Qa6#
      • 1...h5!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qxg8#
      • 1...Rxf5
        • 2.Qxc6#
      • 1...Rxd7
        • 2.Qe4#
      • 1...Sf6
        • 2.Rxf6#
      • 1...Se7
        • 2.Rxe7#
      • 1...Se5
        • 2.Sc5#
      • 1...Sd6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);P_SPINR(c),SBLOCK::S(E)
    • S(b);P_SPINR(c),SBLOCK::S(D)
    • S(g);N_GUARD::R1(G),XS(g)
    • S(g);N_GUARD::R1(F),XS(g)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(A)
      • Refutation
        • R(c);P_SPINS(b),XS(E)
    • Try
      • B(B);P_PINR(c),XS(b)
      • Vars
        • S(g);N_GUARD::R1(G),XS(g)
        • S(g);N_GUARD::R1(F),XS(g)
        • P(a);OGATEB::QAR(A),XP(a)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XS(g)
    • Vars
      • R(c);OGATE,P_SPINS(b),XS(D)::QAR2(A),XP(d)
      • R(c);N_GUARD,P_SPINS(b),XS(E)::QAR2(A)
      • S(g);N_GUARD::R1(G),XS(g)
      • S(g);N_GUARD::R1(F),XS(g)
      • S(b);P_SPINR(c),SBLOCK::S(E)
      • S(b);P_SPINR(c),SBLOCK::S(D)
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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).