MESON Chess Problem Database

Problem Display
PID: 21194 (8/8/K4n2/1B2R3/3P1k1p/7Q/1n3q2/2N5 w - - 0 1)

Corrias, Antonio G

2nd Prize, Good Companions (May Meredith Ty.), 1917

8/8/K4n2/1B2R3/3P1k1p/7Q/1n3q2/2N5

#2

6 + 5

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Se2#
    • 1...Qg3
      • 2.Qf5#
    • 1...Qe2
      • 2.Sxe2#
    • 1...Sd1
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sa4
      • 2.Sd3#
    • 1...Sc4
      • 2.Sd3#
    • 1...Se4
      • 2.Rf5#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Rf5#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Qg3
        • 2.Qf5#
      • 1...Qf3!
    • 1.Qe3+?
      • 1...Kg4
        • 2.Rg5#
      • 1...Qxe3!
  • Keys
    • 1.Be2!
      • 1...Qxe2+
        • 2.Sxe2#
      • 1...Qxd4
        • 2.Qh2#
      • 1...Qe1
        • 2.Qe3#
        • 2.Qf3#
      • 1...Qg1
        • 2.Qf3#
      • 1...Qe3
        • 2.Qxe3#
      • 1...Qg3
        • 2.Qf5#
      • 1...Qf1
        • 2.Qh2#
        • 2.Qe3#
      • 1...Qg2
        • 2.Qe3#
      • 1...Qh2
        • 2.Qxh2#
        • 2.Qe3#
        • 2.Qf3#
      • 1...Qf3
        • 2.Qxf3#
      • 1...Sd1
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa4
        • 2.Sd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Se4
        • 2.Rf5#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sd5
        • 2.Qg4#
      • 1...Sh5
        • 2.Qg4#
      • 1...Sd7
        • 2.Qg4#
      • 1...Sh7
        • 2.Qg4#
      • 1...Se8
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_GUARD::S(A)
    • Q(b);SBLOCK::QAR1(B)
    • Q(b);N_GUARD,P_PINB(D)::S(A),XQ(b)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(e);SBLOCK::R1(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(E)
      • Vars
        • S(a);XB(D)::S(A),XS(a)
        • Q(b);SBLOCK::QAR1(B)
      • Refutation
        • Q(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::R1(E)
      • Refutation
        • Q(b);XQ(B)
  • Actual
    • B(D);
    • Vars
      • Q(b);CHECK,XB(D)::S(A),XQ(b)
      • Q(b);N_GUARD,XP(C)::QAB(B)
      • Q(b);N_GUARD::QAR1(B)
      • Q(b);N_GUARD::QAB1(B),XQ(b)
      • Q(b);SBLOCK::QAR1(B)
      • Q(b);N_GUARD::QAB1(B)
      • Q(b);N_GUARD::QAR1(B),XQ(b)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(e);SBLOCK::R1(E)
      • S(e);N_GUARD::QAR1(B),XS(e)
      • S(e);N_GUARD::QAR1(B)
HTML5 logo

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).