MESON Chess Problem Database

Problem Display
PID: 80879 (b1R3B1/p2p1n2/1p2rpN1/2pk1pp1/Q3N3/8/1K6/8 w - - 0 1)

Guidelli, Giorgio

Good Companions (October), 1918

b1R3B1/p2p1n2/1p2rpN1/2pk1pp1/Q3N3/8/1K6/8

#2

6 + 11

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Se7#
    • 1...Sd6
      • 2.Sc3#
      • 2.Sxf6#
    • 1...c4
      • 2.Qxc4#
    • 1...b5
      • 2.Rxc5#
    • 1...d6
      • 2.Sc3#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Qc4#
      • 1...c4+
        • 2.Qxc4#
      • 1...Rxe4
        • 2.Qxd7#
      • 1...Se5
        • 2.Se7#
      • 1...Sd6
        • 2.Sc3#
        • 2.Sxf6#
      • 1...b5
        • 2.Rxc5#
      • 1...fxe4!
    • 1.Sxf6+?
      • 1...Kd6
        • 2.Qxd7#
      • 1...Rxf6!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qc4#
      • 1...Rxe4
        • 2.Qxd7#
      • 1...fxe4
        • 2.Qd1#
      • 1...c4
        • 2.Qxc4#
      • 1...Se5
        • 2.Se7#
      • 1...Sd6
        • 2.Sxf6#
      • 1...b5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(j);P_SPINR(f),SBLOCK::S(D)
    • P(a);::QAB1(B),XP(a)
    • P(e);N_GUARD::R1(E),XP(a)
    • P(i);SBLOCK::S(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • P(a);CHECK::QAB1(B),XP(a)
        • R(f);N_GUARD,P_SPINS(j),SBLOCK,XS(C)::QAR2(B),XP(i)
        • S(j);P_SPINR(f),SBLOCK::S(D)
        • P(e);N_GUARD::R1(E),XP(a)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);CHECK,XP(g)
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(i)
      • Refutation
        • R(f);P_SPINS(j),XS(C)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAB1(B)
    • Vars
      • R(f);N_GUARD,P_SPINS(j),SBLOCK,XS(C)::QAR2(B),XP(i)
      • P(c);SBLOCK,XS(C)::QAR(B)
      • P(a);::QAB1(B),XP(a)
      • S(j);P_SPINR(f),SBLOCK::S(D)
      • S(j);P_SPINR(f),SBLOCK::S(C),XP(g)
      • P(e);N_GUARD::R1(E),XP(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).