MESON Chess Problem Database

Problem Display
PID: 165608 (2n5/5nBp/4N1R1/R2p1k2/8/1KN2P2/1pP5/1B1q1Q2 w - - 0 1)

Drese, Gerardus Hendrikus

Het Schaakleven, 1932

2n5/5nBp/4N1R1/R2p1k2/8/1KN2P2/1pP5/1B1q1Q2

#2

10 + 7

102 Probleemblad 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc2+
      • 2.Bxc2#
    • 1...Qxb1
      • 2.Qd3#
    • 1...Qc1
      • 2.Qd3#
    • 1...Qd3
      • 2.Qxd3#
    • 1...Se5
      • 2.Rf6#
    • 1...hxg6
      • 2.Qh3#
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Se7#
      • 1...Qxc2+
        • 2.Bxc2#
      • 1...Qxf3+
        • 2.c3#
      • 1...Qd3+
        • 2.Qxd3#
      • 1...Qxd5+
        • 2.c4#
      • 1...Kxg6
        • 2.Sdf4#
      • 1...hxg6
        • 2.Qh3#
      • 1...Se5
        • 2.Rf6#
      • 1...Se7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::B(A),XQ(a)
    • Q(a);N_GUARD,N_PINP(C),XB(A)::QAB(B)
    • Q(a);N_GUARD,N_PINP(C)::QAB(B)
    • Q(a);N_GUARD,N_PINP(C),P_PINS(E)::QAB(B),XQ(a)
    • S(e);N_SPINP(c),SBLOCK::R1(I)
    • P(f);SBLOCK,XR(I)::QAB(B)
  • Actual
    • S(E);XP(c)
    • Threat
      • R(G)+S(E),DCHECK
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::B(A),XQ(a)
      • Q(a);CHECK,N_PINP(C),P_SPINQ(a),XP(F)::B(A)+P(C)
      • Q(a);CHECK,N_GUARD,N_PINP(C)::QAB(B),XQ(a)
      • Q(a);CHECK,N_PINP(C),P_SPINQ(a),XS(E)::B(A)+P(C)
      • K(d);S_FLIGHT,XR(I)::S(E)
      • P(f);SBLOCK,XR(I)::QAB(B)
      • S(e);SBLOCK::R1(I)
      • S(g);::R(G)+S(E),DCHECK,XS(g)
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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).