MESON Chess Problem Database

Problem Display
PID: 264057 (q1b2n2/n7/4p1p1/B1p3N1/1p1kPQp1/3pN1P1/1P6/3R3K w - - 0 1)

van Dijk, Johannes

Tijdschrift vd KNSB, 1951

q1b2n2/n7/4p1p1/B1p3N1/1p1kPQp1/3pN1P1/1P6/3R3K

#2

9 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Qxe4#
    • 1...Qd5
      • 2.exd5#
    • 1...Qb8
      • 2.e5#
    • 1...Sc6
      • 2.e5#
    • 1...Sd7
      • 2.Sxe6#
    • 1...d2
      • 2.Rxd2#
    • 1...b3
      • 2.Bc3#
    • 1...c4
      • 2.Bb6#
  • Keys
    • 1.Bc7!
      • threat
        • 2.Be5#
      • 1...Qxe4+
        • 2.Qxe4#
      • 1...d2
        • 2.Rxd2#
      • 1...c4
        • 2.Bb6#
      • 1...Qd5
        • 2.exd5#
      • 1...Qb8
        • 2.e5#
      • 1...Sc6
        • 2.e5#
      • 1...Sd7
        • 2.Sxe6#
      • 1...e5
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(i);CHECK,OGATE,P_SPINQ(i),XP(F)::QAR1(G),XQ(i)
    • Q(i);::QAR(G)+P(F),XQ(i)
    • Q(i);N_PINP(F)::QAR(G)+P(F)
    • S(h);N_PINP(F)::QAR(G)+P(F)
    • S(k);N_GUARD,S_CUTB(j)::S(I),XP(f)
    • P(a);OGATEB::R(A),XP(a)
    • P(b);OGATE::B(H)
    • P(e);OGATEB::B(H)
  • Actual
    • B(H);
    • Threat
      • B(H)
    • Vars
      • Q(i);CHECK,OGATE,P_SPINQ(i),XP(F)::QAR1(G),XQ(i)
      • P(a);OGATEB::R(A),XP(a)
      • P(e);OGATEB::B(H)
      • Q(i);::QAR(G)+P(F),XQ(i)
      • Q(i);N_PINP(F)::QAR(G)+P(F)
      • S(h);N_PINP(F)::QAR(G)+P(F)
      • S(k);N_GUARD,S_CUTB(j)::S(I),XP(f)
      • P(f);::B(H),XP(f)
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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).