MESON Chess Problem Database

Problem Display
PID: 207992 (1Q6/2n5/2N1RPr1/R3b3/5k1p/6N1/8/3B3K w - - 0 1)

Chocolous, Jiri

Svetozor, 1873

1Q6/2n5/2N1RPr1/R3b3/5k1p/6N1/8/3B3K

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Sh5#
    • 1...Bb2
      • 2.Sh5#
    • 1...Bc3
      • 2.Sh5#
    • 1...Bd4
      • 2.Sh5#
    • 1...Bd6
      • 2.Sh5#
    • 1...Bxf6
      • 2.Sh5#
    • 1...Sb5
      • 2.Qxe5#
    • 1...Sd5
      • 2.Qxe5#
    • 1...Sa6
      • 2.Qxe5#
    • 1...Sxe6
      • 2.Qxe5#
    • 1...Sa8
      • 2.Qxe5#
    • 1...Se8
      • 2.Qxe5#
  • Tries
    • 1.Qb4+?
      • 1...Ke3
        • 2.Qd4#
      • 1...Kg5
        • 2.Qd2#
      • 1...Bd4
        • 2.Sh5#
      • 1...Kxg3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qxe5#
      • 1...Ke3
        • 2.Qd4#
      • 1...Kxg3
        • 2.Qh2#
      • 1...Kg5
        • 2.Qc1#
        • 2.Qd2#
      • 1...Bxb2
        • 2.Sh5#
      • 1...Bxf6
        • 2.Sh5#
        • 2.Qf2#
      • 1...Rg5
        • 2.Qf2#
      • 1...Bc3
        • 2.Sh5#
        • 2.Qf2#
      • 1...Bd4
        • 2.Sh5#
      • 1...Bd6
        • 2.Sh5#
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • B(c);P_SPINS(e)::S(C)
    • B(c);::S(C)
    • B(c);P_SPINS(e),XP(G)::S(C)
    • S(e);OGATE,P_SPINB(c)::QAB1(H),XB(c)
    • S(e);OGATE,P_SPINB(c),XR(F)::QAB1(H),XB(c)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(a);P_SPINB(c),S_FLIGHT::QAB1(H)
        • K(a);P_SPINB(c),S_FLIGHT::QAB(H)
        • B(c);P_SPINB(c)::S(C)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XB(c)
    • Vars
      • K(a);P_SPINB(c),S_FLIGHT::QAB1(H)
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(H)
      • B(c);XQ(H)::S(C)
      • R(d);SBLOCK::QAR2(H)
      • B(c);::S(C)
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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).