MESON Chess Problem Database

Problem Display
PID: 16224 (1b2r3/5n2/Kn3Bp1/1Q3PPN/2pPkqp1/4pR2/8/3R2N1 w - - 0 1)

Youngs, Joe Casey

StrateGems, 2000

1b2r3/5n2/Kn3Bp1/1Q3PPN/2pPkqp1/4pR2/8/3R2N1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxf4#
    • 1...Ba7
      • 2.Rxf4#
    • 1...Sd5
      • 2.Qb1#
    • 1...Se5
      • 2.Rxf4#
    • 1...Sd6
      • 2.Rxf4#
  • Tries
    • 1.Qc6+?
      • 1...Kxf5
        • 2.Sg3#
        • 2.Sg7#
      • 1...Sd5!
  • Keys
    • 1.d5!
      • threat
        • 2.Qb1#
      • 1...Kxf5
        • 2.Sg3#
      • 1...Qh2
        • 2.Rd4#
      • 1...Se5
        • 2.Rxf4#
      • 1...c3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(j);S_CUTB(i)::R1(C),XQ(d)
    • B(i);N_GUARD::R1(C),XQ(d)
    • S(f);SBLOCK::QAB(E)
    • S(h);S_CUTB(i)::R1(C),XQ(d)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • P(D);
    • Threat
      • QAB(E)
    • Vars
      • K(c);P_SPINQ(d),S_FLIGHT,XP(F)::S(H)
      • Q(d);::R1(A)
      • S(h);S_CUTB(i)::R1(C),XQ(d)
      • P(b);OGATE::QAB1(E)
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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).