MESON Chess Problem Database

Problem Display
PID: 108285 (1b2Q1N1/1p1p1p2/p1b3pB/R1n1nk2/p7/1q1p1pRP/3N3K/8 w - - 0 1)

Ferris, L

Telescacco 92, 1996

1b2Q1N1/1p1p1p2/p1b3pB/R1n1nk2/p7/1q1p1pRP/3N3K/8

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Rxf3#
    • 1...Se6
      • 2.Qxf7#
    • 1...Sg4+
      • 2.hxg4#
  • Tries
    • 1.Be3?
      • threat
        • 2.Rg5#
      • 1...Sg4+
        • 2.hxg4#
      • 1...g5
        • 2.Rxg5#
      • 1...Se4
        • 2.Rxf3#
      • 1...Se6
        • 2.Qxf7#
      • 1...f6
        • 2.Sh6#
      • 1...Sc4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qf6#
      • 1...Sg4+
        • 2.hxg4#
      • 1...Qe6
        • 2.Qg5#
      • 1...Se4
        • 2.Rxf3#
      • 1...f6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(e);P_SPINS(f),S_CUTB(i)::R(C),XP(c)
    • S(e);P_SPINS(f),S_CUTQ(a)::QAR2(G),XP(m)
    • S(f);CHECK,OGATE,P_PINR(C),P_SPINS(e)::P(D),XS(f)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • S(f);CHECK,OGATE,P_PINR(C),P_SPINS(e)::P(D),XS(f)
        • P(j);::R1(C),XP(j)
        • S(e);P_SPINS(f),S_CUTB(i)::R(C),XP(c)
        • S(e);P_SPINS(f),S_CUTQ(a)::QAR2(G),XP(m)
        • P(m);SBLOCK::S(H)
      • Refutation
        • S(f);P_PINR(C),P_SPINS(e)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • S(f);CHECK,OGATE,P_PINR(C),P_SPINS(e)::P(D),XS(f)
      • Q(a);SBLOCK::QAR1(G)
      • S(e);P_SPINS(f),S_CUTB(i)::R(C),XP(c)
      • P(m);::QAR1(G),XP(m)
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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).