MESON Chess Problem Database

Problem Display
PID: 64303 (rkn1Q3/p1p1p3/r1p4K/B1N3p1/3N4/3b1n2/7b/1q6 w - - 0 1)

Toth, Julius

Skakbladet, 1931

rkn1Q3/p1p1p3/r1p4K/B1N3p1/3N4/3b1n2/7b/1q6

#2

5 + 13

81 Chess 1946

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sd7#
    • 1...Rxa5
      • 2.Sxc6#
  • Tries
    • 1.Sxa6+?
      • 1...Kb7
        • 2.Qxc6#
      • 1...Bxa6!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Sd7#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sb6
        • 2.Qb7#
      • 1...Sd6
        • 2.Qxc7#
      • 1...Bf5
        • 2.Sxa6#
      • 1...Se5
        • 2.Bxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(a);SBLOCK::S(C)
    • R(f);N_GUARD,XB(B)::S(A),XP(g)
  • Tries
    • Try
      • S(C);CHECK,XR(f)
      • Vars
        • K(l);N_SPINS(m),P-FLIGHT::QAB1(E),XP(g)
      • Refutation
        • B(c);XS(C)
  • Actual
    • Q(E);N_PINS(m),P_SPINQ(E),XP(g)
    • Threat
      • S(C)
    • Vars
      • R(f);CHECK,XQ(E)::S(A),XR(f)
      • S(m);N_PINQ(E)::QAR1(E)
      • S(m);N_PINQ(E)::QAB1(E),XP(i)
      • B(c);N_GUARD::S(C),XR(f)
      • S(d);S_CUTB(b)::B(B),XP(i)
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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).