MESON Chess Problem Database

Problem Display
PID: 278309 (6RB/1P6/8/3PpkpN/2P5/2P5/3P1K2/Q5N1 w - - 0 1)

Maksimovskikh, Aleksandr

Stella Polaris, 1972

6RB/1P6/8/3PpkpN/2P5/2P5/3P1K2/Q5N1

#2

11 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qb1#
  • Tries
    • 1.Kg3?
      • 1...Ke4
        • 2.Qb1#
      • 1...e4
        • 2.Qf1#
      • 1...g4!
    • 1.Sh3?
      • 1...Ke4
        • 2.Qb1#
      • 1...e4
        • 2.Rxg5#
      • 1...g4
        • 2.Sg3#
      • 1...Kg4!
    • 1.Rxg5+?
      • 1...Ke4
        • 2.Qb1#
      • 1...Kxg5!
    • 1.Qd1?
      • threat
        • 2.Qf3#
      • 1...Ke4
        • 2.Qc2#
        • 2.Qf3#
        • 2.Qb1#
      • 1...g4
        • 2.Qxg4#
      • 1...e4!
    • 1.Qa6?
      • 1...Ke4
        • 2.Qg6#
      • 1...e4
        • 2.Qe6#
      • 1...g4
        • 2.Qg6#
      • 1...Kg4!
    • 1.b8Q?
      • 1...Ke4
        • 2.Qab1#
        • 2.Qbb1#
      • 1...e4
        • 2.Qc8#
      • 1...g4
        • 2.Qxe5#
      • 1...Kg4!
  • Keys
    • 1.Qf1!
      • 1...Ke4
        • 2.Qb1#
      • 1...Kg4
        • 2.Qh3#
      • 1...e4
        • 2.Kg3#
      • 1...g4
        • 2.Ke3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);S_CUTP(a),S_FLIGHT::QAB(A)
        • P(a);SBLOCK::QAR(A)
      • Refutation
        • P(c);
    • Try
      • S(B);
      • Vars
        • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB(A)
        • P(a);SBLOCK::R1(J),XP(c)
        • P(c);::S(H)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • R(J);CHECK,XP(c)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(A)
      • Refutation
        • K(b);P-FLIGHT,XR(J)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB(A)
        • P(a);::QAB1(A)
        • P(c);::QAB1(A)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • P(I);
      • Vars
        • P(a);SBLOCK::QAB(I)
        • P(c);::QAR1(I),XP(a)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB(A)
      • K(b);N_GUARD,P_SPINP(c),S_FLIGHT::QAB1(A)
      • P(a);SBLOCK::QAR(A)+K(D)
      • P(c);::QAR(A)+K(D)
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).