MESON Chess Problem Database

Problem Display
PID: 21477 (6bB/2N4p/Pp1PP3/n1k2K1Q/1N1Rpp2/1p6/2qbr2n/2R5 w - - 0 1)

Guidelli, Giorgio

2nd Prize, Good Companions (February), 1919

6bB/2N4p/Pp1PP3/n1k2K1Q/1N1Rpp2/1p6/2qbr2n/2R5

#2

10 + 12

3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Kxf4#
    • 1...Be1
      • 2.Kxf4#
    • 1...Bc3
      • 2.Kxf4#
    • 1...Bxe6+
      • 2.Kxe6#
    • 1...Sf1
      • 2.Kg4#
    • 1...Sg4
      • 2.Kxg4#
    • 1...e3+
      • 2.Kxf4#
    • 1...h6
      • 2.Kg6#
  • Tries
    • 1.Sd3+?
      • 1...Kc6
        • 2.Qe8#
      • 1...exd3!
    • 1.Rxc2+?
      • 1...Bc3
        • 2.Kxf4#
      • 1...Sc4
        • 2.Rcxc4#
      • 1...bxc2!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qb5#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...e3+
        • 2.Sd3#
      • 1...b5
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(c);::QAR(E)+K(D),XP(g)
    • B(b);::QAR(E)+K(D),XP(g)
    • B(b);N_SPINQ(a)::QAR(E)+K(D),XP(g)
    • B(l);CHECK,XP(H)::QAR(E)+K(D),XB(l)
    • S(d);::QAR(E)+K(D)
    • S(d);::QAR(E)+K(D),XS(d)
    • P(f);CHECK::QAR(E)+K(D),XP(g)
    • P(k);::QAR(E)+K(D)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(i);P-FLIGHT::QAB(E)
      • Refutation
        • P(f);XS(B)
    • Try
      • R(A);CHECK,XQ(a)
      • Vars
        • B(b);P_SPINB(b)::QAR(E)+K(D),XP(g)
        • S(h);N_GUARD,P_SPINS(h)::R1(A),XS(h)
      • Refutation
        • P(e);XR(A)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • B(l);CHECK,XP(H)::S(I),XB(l)
      • P(f);CHECK,N_GUARD::S(B)
      • P(j);::QAR1(E),XP(j)
      • S(h);N_GUARD::QAR1(E),XS(h)
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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).