MESON Chess Problem Database

Problem Display
PID: 214674 (1K6/3N2p1/1p1p2p1/3k4/1Pb2b1R/2P5/4Q3/8 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1880

1K6/3N2p1/1p1p2p1/3k4/1Pb2b1R/2P5/4Q3/8

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qxc4#
      • 2.Qe4#
    • 1...Bd2
      • 2.Qxc4#
      • 2.Qe4#
    • 1...Bh2
      • 2.Qxc4#
      • 2.Qe4#
    • 1...Be3
      • 2.Qxc4#
    • 1...Bg3
      • 2.Qxc4#
      • 2.Qe4#
    • 1...Be5
      • 2.Qxc4#
    • 1...Bg5
      • 2.Qxc4#
      • 2.Qe4#
    • 1...Bh6
      • 2.Qxc4#
      • 2.Qe4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Sxb6#
      • 1...Be3
        • 2.Qxc4#
      • 1...Be5
        • 2.Qxc4#
      • 1...b5
        • 2.Sb6#
      • 1...Bxe2!
    • 1.Sf6+?
      • 1...Kc6
        • 2.Qxc4#
        • 2.Qe8#
      • 1...gxf6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sxb6#
      • 1...Kc6
        • 2.Sf6#
      • 1...Be3
        • 2.Qe4#
      • 1...b5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);::QAB1(A),XB(a)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • S(E),XP(d)
      • Vars
        • B(b);::QAB1(A),XB(a)
        • P(d);::S(E)
      • Refutation
        • B(a);XQ(A)
    • Try
      • S(E);CHECK
      • Refutation
        • P(g);XS(E)
  • Actual
    • Q(A);
    • Threat
      • S(E),XP(d)
    • Vars
      • K(c);S_FLIGHT::QAB(A)+S(E)
      • B(b);::QAB1(A)
      • P(d);::S(E)
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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).