MESON Chess Problem Database

Problem Display
PID: 40770 (1R2B3/nbp5/6r1/p7/rkN1N2Q/2R1p3/1P6/6nK w - - 0 1)

Booth, David (Jr)

Deaf Times, 1912

1R2B3/nbp5/6r1/p7/rkN1N2Q/2R1p3/1P6/6nK

#2

8 + 9

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.bxa3#
    • 1...Sc6
      • 2.Rxb7#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rb3#
        • 2.Rc4#
      • 1...Rc6
        • 2.Rb3#
      • 1...Sc6
        • 2.Rb3#
        • 2.Rxb7#
      • 1...c6
        • 2.Rb3#
      • 1...Ra3
        • 2.Rc4#
        • 2.bxa3#
      • 1...exd2!
    • 1.Rxb7+?
      • 1...Sb5
        • 2.Rxb5#
      • 1...Rb6!
    • 1.Qe7+?
      • 1...c5
        • 2.Qxc5#
      • 1...Rd6!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sc2#
      • 1...Rxa3
        • 2.bxa3#
      • 1...Rg2
        • 2.Sg3#
      • 1...Rc6
        • 2.Sc5#
      • 1...Sc6
        • 2.Rxb7#
      • 1...c6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::P(B),XR(c)
    • S(g);N_GUARD,N_PINS(E),S_CUTR(f)::R(G),XB(h)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);N_PINS(E)::R1(C)
        • P(i);N_PINS(E)::R1(C)
      • Refutation
        • P(b);XS(D)
    • Try
      • R(G);CHECK,N_SPINS(E),XB(h)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R1(G),XS(g)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • Q(F);CHECK
      • Vars
        • P(i);P_SPINP(i)::QAB1(F),XP(i)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(c);OGATE,XS(D)::P(B),XR(c)
      • R(f);N_PINS(E)::QAR(F)+S(E)
      • S(g);N_GUARD,N_PINS(E),S_CUTR(f)::R(G),XB(h)
      • P(i);N_PINS(E)::QAR(F)+S(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).