MESON Chess Problem Database

Problem Display
PID: 169877 (R3q3/2Q1rr2/4p3/1Bp5/1bpB1P2/pkP5/6R1/2K1N3 w - - 0 1)

Grasa, Ricardo

SEPA, 1945

R3q3/2Q1rr2/4p3/1Bp5/1bpB1P2/pkP5/6R1/2K1N3

#2

9 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Ba4#
    • 1...Qc8
      • 2.Ba4#
    • 1...Qd8
      • 2.Ba4#
    • 1...Qf8
      • 2.Ba4#
    • 1...Qg8
      • 2.Ba4#
    • 1...Qh8
      • 2.Ba4#
    • 1...Rd7
      • 2.Ba4#
    • 1...a2
      • 2.Rb2#
    • 1...cxd4
      • 2.Qxc4#
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sa1#
      • 1...Ka2
        • 2.Bxc4#
      • 1...Bxc3
        • 2.Rxa3#
      • 1...cxd4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(i);N_GUARD::B(G)
    • R(g);S_CUTQ(i)::B(G)
    • P(a);N_GUARD::R1(C)
    • P(e);OGATE,XB(E)::QAB1(H),XP(d)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::B(G),XP(d)
      • B(c);N_GUARD,XP(D)::R1(I),XP(a)
      • P(e);OGATE,XB(E)::QAB1(H),XP(d)
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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).