MESON Chess Problem Database

Problem Display
PID: 75530 (1B3R2/K2k3P/N1pP3R/n7/5Np1/1b1Pn1p1/5Q2/r1r3b1 w - - 0 1)

Alliney, Frederico

Scacco!, 1984

1B3R2/K2k3P/N1pP3R/n7/5Np1/1b1Pn1p1/5Q2/r1r3b1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sc5#
    • 1...Rd1
      • 2.Sc5#
    • 1...Re1
      • 2.Sc5#
    • 1...Rf1
      • 2.Sc5#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Bc2
      • 2.Sc5#
    • 1...Bc4
      • 2.Sc5#
    • 1...Sc2
      • 2.Sc5#
    • 1...Sec4
      • 2.Sc5#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Sb8#
        • 2.Rd8#
      • 1...c5
        • 2.Sb8#
      • 1...Sac4
        • 2.Rd8#
      • 1...Sb7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Se5#
      • 1...Ke6
        • 2.Qf7#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Sec4
        • 2.Sc5#
      • 1...Sac4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::S(D)
    • R(b);N_GUARD::S(D),XR(b)
    • B(d);S_CUTR(b)::S(D)
    • S(e);P_PINQ(A),S_CUTR(b)::S(D)
  • Tries
    • Try
      • B(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(i);::S(D)
        • S(h);P_PINS(D)::R1(J)
      • Refutation
        • S(h);P_PINS(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(j);S_FLIGHT::QAB1(A)
      • R(b);N_GUARD::S(D),XR(b)
      • S(e);P_PINQ(A),S_CUTR(b)::S(D)
      • S(h);P_PINS(D),S_CUTB(d)::QAR2(A)
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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).