MESON Chess Problem Database

Problem Display
PID: 225615 (8/2B2p2/2pN4/PBkr4/p1rpQN2/K1p5/8/2n4b w - - 0 1)

Maslej, Andrej

4th HM., Praca, 2000

8/2B2p2/2pN4/PBkr4/p1rpQN2/K1p5/8/2n4b

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sd3#
    • 1...Se2
      • 2.Sd3#
    • 1...Sb3
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...d3
      • 2.Qxc4#
    • 1...f5
      • 2.Se6#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Ba6?
      • threat
        • 2.Sb7#
      • 1...Rxd6
        • 2.Bb6#
      • 1...Rb4!
    • 1.Qb1?
      • threat
        • 2.Sb7#
      • 1...Rxd6
        • 2.Bb6#
      • 1...cxb5
        • 2.Qxb5#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Sb3
        • 2.Sd3#
      • 1...d3!
    • 1.Qd3?
      • threat
        • 2.Qxc4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Rb4
        • 2.Sb7#
      • 1...cxb5!
    • 1.Qg6?
      • threat
        • 2.Bb6#
      • 1...cxb5
        • 2.Sb7#
      • 1...fxg6
        • 2.Se6#
      • 1...f6
        • 2.Se6#
      • 1...Rxd6!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Bb6#
      • 1...Rxd6
        • 2.Qxc4#
      • 1...cxb5
        • 2.Sb7#
      • 1...fxe6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • P(f);OGATE::QAR1(B),XR(e)
    • P(j);N_GUARD::S(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • R(h);SBLOCK,XS(F)::B(G)
      • Refutation
        • R(e);
    • Try
      • Q(B);
      • Threat
        • S(F)
      • Vars
        • R(h);SBLOCK,XS(F)::B(G)
        • P(i);OGATE,XB(E)::QAR1(B),XP(i)
        • R(e);N_GUARD::QAB1(B),XR(e)
        • S(a);N_GUARD::S(C)
      • Refutation
        • P(f);
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XR(e)
      • Vars
        • S(a);XQ(B)::S(C),XS(a)
        • R(e);::S(F)
      • Refutation
        • P(i);XB(E)
    • Try
      • Q(B);
      • Threat
        • B(G)
      • Vars
        • P(i);SBLOCK,XB(E)::S(F)
        • P(j);N_GUARD,XQ(B)::S(C)
        • P(j);N_GUARD::S(C)
      • Refutation
        • R(h);XS(F)
  • Actual
    • Q(B);
    • Threat
      • B(G)
    • Vars
      • R(h);OGATE,XS(F)::QAR1(B),XR(e)
      • P(i);SBLOCK,XB(E)::S(F)
      • P(j);XQ(B)::S(C),XP(j)
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).