MESON Chess Problem Database

Problem Display
PID: 225231 (Q7/2p5/2Ppppp1/1Ppk2P1/1p5R/1P1N1K2/4P3/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

Suomen Shakki, 2000

Q7/2p5/2Ppppp1/1Ppk2P1/1p5R/1P1N1K2/4P3/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.bxc4#
    • 1...e5
      • 2.Qg8#
  • Tries
    • 1.Sf4+?
      • 1...Kd4
        • 2.Qa1#
      • 1...Ke5!
    • 1.Rc4?
      • threat
        • 2.e4#
      • 1...e5
        • 2.Qg8#
      • 1...f5!
    • 1.Re4?
      • threat
        • 2.Sf4#
      • 1...e5
        • 2.Qg8#
      • 1...c4
        • 2.bxc4#
      • 1...fxg5!
    • 1.Qa1?
      • threat
        • 2.Sf4#
        • 2.e4#
      • 1...fxg5
        • 2.e4#
      • 1...f5
        • 2.Sf4#
      • 1...c4
        • 2.Rd4#
        • 2.Qd4#
        • 2.e4#
        • 2.bxc4#
      • 1...e5!
    • 1.gxf6?
      • 1...e5
        • 2.Qg8#
      • 1...c4
        • 2.bxc4#
      • 1...g5!
  • Keys
    • 1.Qh8!
      • 1...fxg5
        • 2.e4#
      • 1...e5
        • 2.Qg8#
      • 1...f5
        • 2.Sf4#
      • 1...c4
        • 2.bxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::P(B),XP(b)
    • P(e);OGATEB::QAB(I)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(I)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • P(A)
      • Vars
        • P(e);OGATEB::QAB(I)
      • Refutation
        • P(f);
    • Try
      • R(E);
      • Threat
        • S(C)
      • Vars
        • P(e);OGATEB::QAB(I)
        • P(b);OGATE::P(B),XP(b)
      • Refutation
        • P(f);XP(G)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(G)::P(A)
        • P(f);::S(C)
      • Refutation
        • P(e);
    • Try
      • P(G);XP(f)
      • Vars
        • P(e);OGATEB::QAB(I)
        • P(b);OGATE::P(B),XP(b)
      • Refutation
        • P(g);
  • Actual
    • Q(I);
    • Vars
      • P(f);XP(G)::P(A)
      • P(e);OGATEB::QAB(I)
      • P(f);::S(C)
      • P(b);OGATE::P(B),XP(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).