MESON Chess Problem Database

Problem Display
PID: 200125 (3B4/3pK3/R1pPp2R/3k4/1p6/1P2PP2/3N1PP1/6Q1 w - - 0 1)

Petite, Efren

Suomen Shakki, 1990

3B4/3pK3/R1pPp2R/3k4/1p6/1P2PP2/3N1PP1/6Q1

#2

12 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Ra5#
    • 1...Ke5
      • 2.Rh5#
  • Tries
    • 1.Sc4?
      • 1...Kc5
        • 2.Ra5#
      • 1...c5
        • 2.Qd1#
      • 1...e5!
    • 1.Se4?
      • 1...Ke5
        • 2.Rh5#
      • 1...e5
        • 2.Qd1#
      • 1...c5!
    • 1.Bb6?
      • 1...Ke5
        • 2.Rh5#
      • 1...e5
        • 2.e4#
      • 1...c5!
    • 1.Qa1?
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Ra5#
        • 2.Qe5#
        • 2.Qa5#
      • 1...c5
        • 2.e4#
      • 1...e5!
    • 1.Qb1?
      • 1...Kc5
        • 2.Ra5#
      • 1...Ke5
        • 2.Rh5#
        • 2.Qe4#
      • 1...c5
        • 2.Qe4#
      • 1...e5!
    • 1.Qc1?
      • 1...Ke5
        • 2.Rh5#
        • 2.Qc5#
      • 1...e5
        • 2.Qc4#
      • 1...c5!
    • 1.Qf1?
      • 1...Kc5
        • 2.Ra5#
        • 2.Qc4#
      • 1...Ke5
        • 2.Rh5#
      • 1...e5
        • 2.Qc4#
      • 1...c5!
  • Keys
    • 1.Qd1!
      • 1...Kc5
        • 2.Ra5#
      • 1...Ke5
        • 2.Rh5#
      • 1...c5
        • 2.Sc4#
      • 1...e5
        • 2.Se4#

There are these versions: 168335

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(H)
    • K(b);P-FLIGHT::R(J)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);P-FLIGHT::R(H)
        • P(c);SBLOCK::QAR(A)
      • Refutation
        • P(d);
    • Try
      • S(B);
      • Vars
        • K(b);P-FLIGHT::R(J)
        • P(d);SBLOCK::QAR(A)
      • Refutation
        • P(c);
    • Try
      • B(L);
      • Vars
        • K(b);P-FLIGHT::R(J)
        • P(d);SBLOCK::P(F)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);SBLOCK::P(F)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::R(H)
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Vars
        • P(d);SBLOCK::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::R(J)
        • P(d);SBLOCK::QAB1(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::R(H)
      • K(b);P-FLIGHT::R(J)
      • P(c);SBLOCK::QAR(A)+S(B)
      • P(d);SBLOCK::QAR(A)+S(B)
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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).