MESON Chess Problem Database

Problem Display
PID: 261275 (7b/1P1r4/1P2Q3/2P2pNB/6pr/3k4/3PNPn1/1K1R1R2 w - - 0 1)

Fulpius, Jaques

Neue Zurcher Zeitung, 1982

7b/1P1r4/1P2Q3/2P2pNB/6pr/3k4/3PNPn1/1K1R1R2

#2

12 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sc1#
    • 1...Bc3
      • 2.dxc3#
    • 1...Bd4
      • 2.Sc1#
    • 1...f4
      • 2.Bg6#
      • 2.Qe4#
  • Tries
    • 1.Qb3+?
      • 1...Bc3
        • 2.Qb5#
      • 1...Kxe2!
    • 1.Qxd7+?
      • 1...Kxe2
        • 2.Qb5#
      • 1...Bd4
        • 2.Qb5#
      • 1...Kc4!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qa6#
      • 1...Kxe2
        • 2.d4#
      • 1...Rd4
        • 2.Sc1#
      • 1...Se3
        • 2.dxe3#
      • 1...g3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);SBLOCK::S(E)
    • B(g);OGATE::R(B)+P(D),XB(g)
    • B(g);SBLOCK::S(E)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • B(g);P_SPINB(g)::QAB(K)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XS(E)
    • Try
      • Q(K);CHECK,XR(f)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT,XS(E)::QAB(K)
        • B(g);P_SPINB(g)::QAB(K)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(K);
    • Threat
      • QAB(K)
    • Vars
      • K(b);OGATE,P_SPINP(c),S_FLIGHT,XS(E)::QAR(K)+P(D)
      • R(f);SBLOCK::S(E)
      • S(a);OGATE::R(B)+P(D),XS(a)
      • P(c);::QAB1(K)
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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).