MESON Chess Problem Database

Problem Display
PID: 239619 (R2N4/q1BbpnP1/2P4Q/P2k1BR1/K2p1rp1/1P1N4/8/8 w - - 0 1)

Maleika, Gerhard

idee & form, 2007

R2N4/q1BbpnP1/2P4Q/P2k1BR1/K2p1rp1/1P1N4/8/8

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Sxf4#
    • 1...Qxa5+
      • 2.Rxa5#
    • 1...Re4
      • 2.Be6#
    • 1...Rxf5
      • 2.Qh1#
    • 1...Bxf5
      • 2.Qe6#
    • 1...Bxc6+
      • 2.Qxc6#
    • 1...Be6
      • 2.Qxe6#
    • 1...Be8
      • 2.Qe6#
  • Tries
    • 1.Qh1+?
      • 1...Re4
        • 2.Bxe4#
        • 2.Be6#
        • 2.Qxe4#
      • 1...Rf3!
  • Keys
    • 1.g8S!
      • threat
        • 2.Sxe7#
      • 1...Qxa5+
        • 2.Rxa5#
      • 1...Bxc6+
        • 2.Qxc6#
      • 1...Rxf5
        • 2.Qh1#
      • 1...Bxf5
        • 2.Qe6#
      • 1...Qc5
        • 2.Sxf4#
      • 1...Re4
        • 2.Be6#
      • 1...e5
        • 2.Sf6#
        • 2.Se7#
      • 1...e6
        • 2.Sf6#
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_PINP(D),P_PINP(G),SBLOCK::S(B),XR(b)
    • Q(e);CHECK,OGATE,P_PINP(G),XP(D)::R(K),XQ(e)
    • R(b);SBLOCK::R(F)+B(E),DCHECK
    • R(b);N_GUARD,P_SPINR(b),XB(E)::QAB(H)
    • B(f);N_GUARD,P_SPINB(f),XB(E)::QAB1(H)
    • B(f);CHECK,OGATE,XP(G)::QAB1(H),XB(f)
    • B(f);N_GUARD::QAB1(H),XB(f)
    • B(f);N_GUARD::QAB1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • P(J);
    • Threat
      • S(J),XP(g)
    • Vars
      • Q(e);CHECK,OGATE,P_PINP(G),XP(D)::R(K),XQ(e)
      • B(f);CHECK,OGATE,XP(G)::QAB1(H),XB(f)
      • R(b);N_GUARD,P_SPINR(b),XB(E)::QAB(H)
      • B(f);N_GUARD,P_SPINB(f),XB(E)::QAB1(H)
      • Q(e);N_PINP(D),P_PINP(G),SBLOCK::S(B),XR(b)
      • R(b);SBLOCK::R(F)+B(E),DCHECK
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).