MESON Chess Problem Database

Problem Display
PID: 193547 (5K2/n6R/1pPQ4/bp1N4/2k3pr/R3Bp2/4b1q1/5B2 w - - 0 1)

Bell, EP

2nd Prize, Four-Leaved Shamrock, 1915

5K2/n6R/1pPQ4/bp1N4/2k3pr/R3Bp2/4b1q1/5B2

#2

8 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Bxd3#
    • 1...Be1
      • 2.Sxb6#
    • 1...Bd2
      • 2.Sxb6#
    • 1...Bc3
      • 2.Sxb6#
      • 2.Rxc3#
    • 1...Bb4
      • 2.Sxb6#
    • 1...Sxc6
      • 2.Qxc6#
    • 1...f2
      • 2.Bxe2#
    • 1...g3
      • 2.Rxh4#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe4#
      • 1...Bb4+
        • 2.Se7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Bc3
        • 2.Rxc3#
      • 1...b4
        • 2.Sc7#
      • 1...f2
        • 2.Bxe2#
      • 1...g3
        • 2.Rxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);OGATE::B(A),XB(a)
    • B(g);N_GUARD::S(D),XP(i)
    • B(g);N_GUARD,P_PINQ(F)::S(D),XP(i)
    • S(j);OGATE,XP(E)::QAR2(F),XS(j)
    • P(c);N_GUARD,S_CUTQ(b)::B(A),XB(a)
    • P(e);OGATEB::R(G),XR(f)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • B(g);CHECK,SBLOCK::QAB(F)+S(D)
      • S(j);OGATE,XP(E)::QAR2(F),XS(j)
      • B(g);N_GUARD::R1(B),XB(g)
      • P(h);SBLOCK::QAB(F)+S(D)
      • P(c);N_GUARD,S_CUTQ(b)::B(A),XB(a)
      • P(e);OGATEB::R(G),XR(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).