MESON Chess Problem Database

Problem Display
PID: 152057 (8/3Q4/Kb1N1p2/2pbp2r/n5n1/1N1k4/7p/2RBR3 w - - 0 1)

Groeneveld, Cornelis

1st HM., UV CSTV, 1983

8/3Q4/Kb1N1p2/2pbp2r/n5n1/1N1k4/7p/2RBR3

#2

7 + 10

3485 Sachova skladba 1985

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Se4#
    • 1...Bg2
      • 2.Se4#
    • 1...Bxb3
      • 2.Sc4#
    • 1...Bf3
      • 2.Se4#
    • 1...Bc4+
      • 2.Sxc4#
    • 1...Be4
      • 2.Sxe4#
    • 1...Bb7+
      • 2.Sxb7#
    • 1...Bf7
      • 2.Sxf7#
    • 1...Ba8
      • 2.Sb7#
    • 1...Bg8
      • 2.Sf7#
    • 1...Sc3
      • 2.Bc2#
    • 1...Se3
      • 2.Be2#
  • Tries
    • 1.Qb5+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...c4!
    • 1.Qf5+?
      • 1...Be4
        • 2.Qxe4#
        • 2.Qf1#
      • 1...e4
        • 2.Qf1#
      • 1...Rxf5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qxd5#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Se3
        • 2.Sf2#
      • 1...c4
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • B(f);::QAR(G)+S(F)
    • B(f);XS(D)::QAR(G)+S(F)
    • B(f);CHECK::QAR(G)+S(F),XB(f)
    • B(f);::QAR(G)+S(F),XB(f)
    • S(c);SBLOCK::B(B)
    • S(d);SBLOCK::B(B)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • B(f);N_GUARD,P_PINQ(G),P_SPINB(f)::QAB1(G),XB(f)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(G);CHECK
      • Vars
        • P(g);P_SPINP(g)::QAB(G)
      • Refutation
        • R(h);XQ(G)
  • Actual
    • S(F);P_PINB(f)
    • Threat
      • QAR2(G),XB(f)
    • Vars
      • S(c);N_GUARD::R1(A),XS(c)
      • S(d);N_GUARD::S(F)
      • P(e);SBLOCK::B(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).