MESON Chess Problem Database

Problem Display
PID: 272731 (3R4/1N1pnKN1/PpkPB3/1p2ppP1/1p6/2B5/4p3/2R3q1 w - - 0 1)

Velasco, Jose Luis

Mosiashvili-75 JT (Kudesnik), 2023

3R4/1N1pnKN1/PpkPB3/1p2ppP1/1p6/2B5/4p3/2R3q1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Bd4#
    • 1...Qh2
      • 2.Ba1#
      • 2.Be1#
      • 2.Bb2#
      • 2.Bd2#
      • 2.Bxb4#
      • 2.Bd4#
      • 2.Bxe5#
    • 1...Qd4
      • 2.Bxd4#
    • 1...Qe1
      • 2.Bxe1#
    • 1...Qf1
      • 2.Be1#
    • 1...Qh1
      • 2.Be1#
    • 1...Qg2
      • 2.Ba1#
      • 2.Be1#
      • 2.Bb2#
      • 2.Bd2#
      • 2.Bxb4#
      • 2.Bd4#
      • 2.Bxe5#
    • 1...Qg4
      • 2.Bd4#
    • 1...Qxg5
      • 2.Bd2#
    • 1...Sd5
      • 2.Bxd7#
    • 1...Sg6
      • 2.Rc8#
    • 1...Sc8
      • 2.Rxc8#
    • 1...Sg8
      • 2.Rc8#
  • Tries
    • 1.dxe7?
      • threat
        • 2.Rc8#
      • 1...Kc7
        • 2.Bxe5#
      • 1...dxe6!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sxe7#
      • 1...Qxg5
        • 2.Bd2#
      • 1...Sxf5
        • 2.Rc8#
      • 1...Qf2
        • 2.Bd4#
      • 1...Qf1
        • 2.Be1#
      • 1...Sd5
        • 2.Bxd7#
      • 1...Sg6
        • 2.Rc8#
      • 1...Sc8
        • 2.Rxc8#
      • 1...Sg8
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::R(A)+B(B)
    • Q(a);N_GUARD::R(A)+B(B),XQ(a)
    • Q(a);N_GUARD,XP(C)::R(A)+B(B)
    • S(j);SBLOCK::B(F),XP(i)
    • S(j);N_GUARD::R(J)
    • S(j);N_GUARD::R(J),XS(j)
  • Tries
    • Try
      • P(E);XS(j)
      • Threat
        • R(J)
      • Vars
        • K(h);P-FLIGHT::R(A)+B(B),DCHECK,XP(e)
      • Refutation
        • P(i);XB(F)
  • Actual
    • S(I);XP(f)
    • Threat
      • S(I),XS(j)
    • Vars
      • Q(a);N_GUARD,XP(C)::R(A)+B(B)
      • S(j);N_GUARD,XS(I)::R(J)
      • Q(a);N_GUARD,P_PINS(I)::R(A)+B(B)
      • S(j);SBLOCK::B(F),XP(i)
      • S(j);N_GUARD::R(J)
      • S(j);N_GUARD::R(J),XS(j)
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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).