MESON Chess Problem Database

Problem Display
PID: 108068 (4B3/5p2/qpN4K/r2R1Q2/1Pk5/4P3/1R6/1Nnr3b w - - 0 1)

Fleck, Ferenc

Voros Meteor, 1953

4B3/5p2/qpN4K/r2R1Q2/1Pk5/4P3/1R6/1Nnr3b

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Rd4#
    • 1...Rf1
      • 2.Rd4#
    • 1...Rg1
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Bxd5
      • 2.Se5#
    • 1...Sb3
      • 2.Rc2#
    • 1...Sd3
      • 2.Rd4#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Sd2+?
      • 1...Kc3
        • 2.Rc2#
        • 2.Qc2#
        • 2.Qe5#
        • 2.Qf6#
      • 1...Rxd2!
    • 1.Sa3+?
      • 1...Kc3
        • 2.Qc2#
      • 1...Rxa3!
    • 1.Qe4+?
      • 1...Rd4
        • 2.Se5#
        • 2.Qxd4#
      • 1...Bxe4!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Se5#
      • 1...Sb3
        • 2.Rc2#
      • 1...Sd3
        • 2.Rc5#
      • 1...b5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::R1(E)
    • R(b);N_GUARD::R1(E),XR(b)
    • B(c);SBLOCK,XR(E)::S(G)
    • S(a);SBLOCK::R(B)
    • S(a);S_CUTR(b)::R1(E)
    • P(g);N_GUARD,P_PINS(G),S_CUTR(e)::R1(E)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • R(b);XS(A)
    • Try
      • S(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(F)
      • Refutation
        • R(e);XS(A)
    • Try
      • Q(F);CHECK
      • Refutation
        • B(c);XQ(F)
  • Actual
    • Q(F);XP(h)
    • Threat
      • S(G)
    • Vars
      • S(a);SBLOCK::R(B)
      • S(a);SBLOCK::QAB(F)+R(E),DCHECK
      • P(g);P_PINS(G),SBLOCK::QAB(F)+R(E),DCHECK
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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).