MESON Chess Problem Database

Problem Display
PID: 198346 (8/K1p5/R1P1pN2/P3k3/2p1N1P1/1pq2b2/1B1Qn3/b7 w - - 0 1)

ten Cate, Pieter

Gymnasiasten Schach Blad, 1920

8/K1p5/R1P1pN2/P3k3/2p1N1P1/1pq2b2/1B1Qn3/b7

#2

9 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Sd7#
    • 1...Sd4
      • 2.Qh2#
    • 1...Sf4
      • 2.Qxc3#
  • Tries
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qg5#
      • 1...exd5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Rb5#
      • 1...Bxe4
        • 2.Sd7#
      • 1...cxb6
        • 2.Qd6#
      • 1...Qd4
        • 2.Qg5#
      • 1...Sd4
        • 2.Qh2#
      • 1...Sf4
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK,XS(C)::S(H)
    • S(b);N_SPINQ(d),OGATE,SBLOCK::QAB(B)
    • S(b);N_GUARD,SBLOCK::QAB(B),XQ(d)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(g);N_SPINQ(d),OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • P(h);XQ(B)
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • B(e);SBLOCK,XS(C)::S(H)
      • P(i);N_GUARD,XR(F)::QAB1(B)
      • Q(d);P_PINR(F)::QAR2(B)
      • S(b);N_SPINQ(d),OGATE,SBLOCK::QAB(B)
      • S(b);N_GUARD,SBLOCK::QAB(B),XQ(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).