MESON Chess Problem Database

Problem Display
PID: 272230 (3b3R/2ppk3/2P1B1p1/4B2b/2PN2p1/6P1/5K2/3RQ3 w - - 0 1)

di Scala, Pascal

diagrammes, 1977

3b3R/2ppk3/2P1B1p1/4B2b/2PN2p1/6P1/5K2/3RQ3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qb4#
  • Tries
    • 1.Bf6+?
      • 1...Kd6
        • 2.Qb4#
        • 2.Qe5#
      • 1...Kxf6!
    • 1.Bd5?
      • 1...g5
        • 2.Sf5#
      • 1...d6
        • 2.Bg7#
      • 1...dxc6!
    • 1.Qd2?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...dxe6!
    • 1.Qe3?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...dxe6!
  • Keys
    • 1.Bg7!
      • 1...Kd6
        • 2.Qb4#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qxe6#
      • 1...g5
        • 2.Sf5#
      • 1...d5
        • 2.Qb4#
      • 1...d6
        • 2.Bd5#
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAB(B)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • K(f);S_FLIGHT,XB(G)
    • Try
      • B(I);
      • Vars
        • P(c);N_GUARD::S(F)
        • P(e);SBLOCK::QAR(B)+B(G)
      • Refutation
        • P(e);XP(H)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • P(c);::QAB(B),XP(c)
      • Refutation
        • P(e);XB(I)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • P(c);::QAB(B),XP(c)
      • Refutation
        • P(e);XB(I)
  • Actual
    • B(G);
    • Vars
      • K(f);S_CUTP(e),S_FLIGHT::QAB(B)
      • P(e);XP(H)::S(F),XP(e)
      • P(e);OGATE,P_SPINP(e),XB(I)::QAR1(B),XP(e)
      • P(c);N_GUARD::S(F)
      • P(e);N_GUARD::QAB(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).