MESON Chess Problem Database

Problem Display
PID: 217032 (8/2p4Q/2p5/P3p3/1kP1R3/6K1/R2P4/8 w - - 0 1)

Tereshenko, Nikolai Semenovich

Shakhmatnoe obozrenie, 1893

8/2p4Q/2p5/P3p3/1kP1R3/6K1/R2P4/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qe7#
  • Tries
    • 1.Rg4?
      • 1...Kb3
        • 2.Qb1#
      • 1...Kc5
        • 2.Qe7#
      • 1...c5
        • 2.Qb1#
      • 1...e4!
    • 1.Rh4?
      • 1...Kb3
        • 2.Qb1#
      • 1...Kc5
        • 2.Qe7#
      • 1...c5
        • 2.Qb1#
      • 1...e4!
    • 1.Qh1?
      • 1...Kb3
        • 2.Qb1#
      • 1...c5
        • 2.Qb1#
      • 1...Kc5!
    • 1.Qxc7?
      • threat
        • 2.Qb6#
      • 1...Kc5
        • 2.Qe7#
      • 1...Kb3!
    • 1.Qd7?
      • 1...Kc5
        • 2.Qe7#
      • 1...c5
        • 2.Qa4#
        • 2.Qb5#
      • 1...Kb3!
    • 1.Qe7+?
      • 1...Kb3
        • 2.Qa3#
      • 1...c5!
    • 1.Qf7?
      • 1...Kb3
        • 2.c5#
      • 1...Kc5
        • 2.Qe7#
        • 2.Qf8#
      • 1...c5!
    • 1.Qh8?
      • 1...Kc5
        • 2.Qf8#
      • 1...c5
        • 2.Qb8#
      • 1...Kb3!
  • Keys
    • 1.Qg8!
      • 1...Kb3
        • 2.c5#
      • 1...Kc5
        • 2.Qf8#
      • 1...c5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(G)
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(G)
        • K(a);S_FLIGHT::QAB(G)
        • P(c);SBLOCK::QAR(G)
      • Refutation
        • P(b);
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(G)
        • K(a);S_FLIGHT::QAB(G)
        • P(c);SBLOCK::QAR(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);P-FLIGHT::QAR2(G)
        • P(c);SBLOCK::QAR(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);XP(d)
      • Threat
        • QAR2(G)
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT::QAB(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(G);
      • Vars
        • K(a);P-FLIGHT::QAB(G)+P(D)
      • Refutation
        • P(c);
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAB(G)
        • P(c);SBLOCK::QAR(G)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);P-FLIGHT::QAB(G)+P(D)
      • K(a);S_FLIGHT::QAB(G)
      • P(c);SBLOCK::QAR(G)
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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).