MESON Chess Problem Database

Problem Display
PID: 202370 (2r3n1/pRn1p2p/1N1k2rR/1B3b2/4p3/3N4/Q4B1p/K5b1 w - - 0 1)

Rietveld, Johannes Jacob

4th Prize, Il Secolo, 1923

2r3n1/pRn1p2p/1N1k2rR/1B3b2/4p3/3N4/Q4B1p/K5b1

#2

8 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sxc8#
      • 2.Bg3#
      • 2.Qa3#
    • 1...Be6
      • 2.Qa3#
    • 1...Sxb5
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa6
      • 2.Qd5#
    • 1...Se6
      • 2.Sxc8#
      • 2.Rd7#
      • 2.Qd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Se8
      • 2.Qd5#
    • 1...axb6
      • 2.Rxb6#
    • 1...e6
      • 2.Sxc8#
      • 2.Qa3#
  • Tries
    • 1.Sc4+?
      • 1...Kd5
        • 2.Sf4#
      • 1...Ke6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sc4#
      • 1...Sxb5
        • 2.Qd5#
      • 1...axb6
        • 2.Rxb6#
      • 1...Re6
        • 2.Bg3#
      • 1...Be6
        • 2.Qf4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa6
        • 2.Qd5#
      • 1...Se6
        • 2.Rd7#
      • 1...Sa8
        • 2.Qd5#
      • 1...Se8
        • 2.Qd5#
      • 1...e6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);N_SPINR(f),SBLOCK::QAB(B)
    • S(h);N_GUARD,XB(E)::QAR1(B)
    • S(h);N_GUARD::QAR1(B),XS(h)
    • S(h);N_GUARD::QAR1(B)
    • P(g);OGATE,XS(F)::R(H),XP(g)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);N_SPINR(f),P-FLIGHT::S(D)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • S(F)
    • Vars
      • S(h);N_GUARD,XB(E)::QAR1(B)
      • P(g);OGATE,XS(F)::R(H),XP(g)
      • R(f);S_CUTP(i)::B(C)
      • B(d);N_SPINR(f),OGATE,SBLOCK::QAB(B)
      • S(h);N_GUARD::QAR1(B),XS(h)
      • S(h);N_GUARD::QAR1(B)
      • S(h);N_SPINR(f),OGATE::R1(H)
      • P(i);N_SPINR(f),OGATE::QAR1(B)
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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).