MESON Chess Problem Database

Problem Display
PID: 81540 (8/Kp6/1R2n3/P4R2/1Nk2p2/2P2NbQ/P1P2Pq1/3nB2B w - - 0 1)

Heyl, Peter

Die Schwalbe, 2008

8/Kp6/1R2n3/P4R2/1Nk2p2/2P2NbQ/P1P2Pq1/3nB2B

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qxf1#
    • 1...Qh2
      • 2.Qf1#
    • 1...Bxf2
      • 2.Sd2#
    • 1...Bh2
      • 2.Sd2#
    • 1...Bh4
      • 2.Sd2#
    • 1...Sc5
      • 2.Se5#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Rb4#
      • 1...Qxf2
        • 2.Sfe5#
      • 1...Bxf2!
    • 1.Sc6?
      • threat
        • 2.Rb4#
      • 1...Bxf2
        • 2.Sd2#
      • 1...Qxf2!
    • 1.Rxf4+?
      • 1...Kc5
        • 2.Qf5#
      • 1...Sd4
        • 2.Qc8#
      • 1...Sxf4
        • 2.Qc8#
      • 1...Bxf4!
    • 1.Rc5+?
      • 1...Sxc5
        • 2.Se5#
      • 1...Kxc5!
    • 1.Rc6+?
      • 1...Sc5
        • 2.Rfxc5#
        • 2.Rcxc5#
      • 1...bxc6!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Rb4#
      • 1...Qxf2
        • 2.Se5#
      • 1...Bxf2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(b);OGATE::QAB(H),XQ(b)
    • Q(b);OGATE::QAB(H)
    • B(c);P_PINR(L),XP(E)::S(G)
    • B(c);::S(G)
    • S(f);SBLOCK::S(G)
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(L)
      • Vars
        • Q(b);P_PINR(L),XP(E)::S(G)
      • Refutation
        • B(c);P_PINR(L),XP(E)
    • Try
      • S(I);
      • Threat
        • R1(L)
      • Vars
        • B(c);P_PINR(L),XP(E)::S(G)
      • Refutation
        • Q(b);P_PINR(L),XP(E)
    • Try
      • R(K);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT::QAR(H)
        • S(f);OGATE,P_SPINS(f)::QAR(H)
        • S(f);OGATE,XR(K)::QAR(H)
      • Refutation
        • B(c);XR(K)
    • Try
      • R(K);CHECK
      • Vars
        • S(f);SBLOCK,XR(K)::S(G)
      • Refutation
        • K(d);P-FLIGHT,XR(K)
    • Try
      • R(L);CHECK
      • Refutation
        • P(g);XR(L)
  • Actual
    • S(I);
    • Threat
      • R1(L)
    • Vars
      • Q(b);P_PINR(L),XP(E)::S(G)
      • B(c);P_PINR(L),XP(E)::S(G)
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).