MESON Chess Problem Database

Problem Display
PID: 137095 (2Nbr3/2Rp4/1pP5/1ppk1P2/2n1p1N1/1QP2P2/3PB3/3R1K2 w - - 0 1)

Paslack, Rainer

StrateGems, 2010

2Nbr3/2Rp4/1pP5/1ppk1P2/2n1p1N1/1QP2P2/3PB3/3R1K2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Se3#
    • 1...e3
      • 2.dxe3#
    • 1...b4
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...dxc6
      • 2.Rd7#
    • 1...d6
      • 2.Sxb6#
  • Keys
    • 1.Qxb5!
      • threat
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...Sxd2+
        • 2.Rxd2#
      • 1...Se3+
        • 2.dxe3#
      • 1...Bxc7
        • 2.Bxc4#
      • 1...exf3
        • 2.Qxc4#
      • 1...Sb2
        • 2.Rxd7#
      • 1...Sa3
        • 2.Rxd7#
      • 1...Sa5
        • 2.Rxd7#
      • 1...Se5
        • 2.Se3#
      • 1...Sd6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(i);SBLOCK::S(H)
    • P(b);OGATE::R(A)+P(C),XP(b)
    • P(g);SBLOCK,XP(J)::R(K)
    • P(g);SBLOCK::S(L),XP(f)
  • Actual
    • Q(E);N_PINS(a),P_PINP(d),XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • S(a);CHECK,OGATE,P_SPINS(a),XP(C)::R(A),XS(a)
      • S(a);CHECK,OGATE::R(A)+P(C),XS(a)
      • B(h);XR(K)::B(D),XS(a)
      • P(b);XP(G)::QAB1(E),XS(a)
      • S(a);N_GUARD::R(K),XP(g)
      • S(a);N_GUARD,SBLOCK::S(H)
      • S(a);N_GUARD,SBLOCK::S(L),XP(f)
HTML5 logo

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).