MESON Chess Problem Database

Problem Display
PID: 150943 (1brn1Q2/qb6/p1n1pP2/p1N1k1Pp/1p3N1r/3K2P1/2B1P3/2BR4 w - - 0 1)

Papack, Daniel

Sp. Prize, Pat a Mat, 2008

1brn1Q2/qb6/p1n1pP2/p1N1k1Pp/1p3N1r/3K2P1/2B1P3/2BR4

#2

11 + 13

23 Die Schwalbe 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qxc5#
  • Tries
    • 1.Kc4?
      • threat
        • 2.Sd7#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Rxf4+
        • 2.Bxf4#
        • 2.gxf4#
      • 1...Rc7
        • 2.Qd6#
      • 1...Sd4
        • 2.Sg6#
      • 1...Se7
        • 2.Bb2#
      • 1...Ba8!
    • 1.e4?
      • threat
        • 2.Sg6#
        • 2.Sd7#
      • 1...Qxc5
        • 2.Sg6#
        • 2.Qxc5#
      • 1...Rxf4
        • 2.Sd7#
        • 2.Bxf4#
        • 2.gxf4#
      • 1...Rc7
        • 2.Sg6#
      • 1...Ba8
        • 2.Sg6#
      • 1...Se7!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Sg6#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Rxf4
        • 2.gxf4#
      • 1...Sd4
        • 2.Sd7#
      • 1...Se7
        • 2.Bb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(i);OGATE,XS(H)::QAR2(K),XQ(i)
  • Tries
    • Try
      • K(E);P_SPINS(G),S_FLIGHT
      • Threat
        • S(H)
      • Vars
        • Q(i);CHECK,OGATE,XS(H)::QAR2(K),XQ(i)
        • R(l);S_CUTB(k)::QAB1(K)
        • S(g);N_PINS(G),P_PINS(H)::S(G)
        • S(g);N_GUARD::B(A)
      • Refutation
        • B(j);
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(l);::S(G)
        • B(j);::S(G)
      • Refutation
        • S(g);
  • Actual
    • K(E);P-FLIGHT,P_SPINS(H)
    • Threat
      • S(G)
    • Vars
      • Q(i);CHECK,OGATE,XS(H)::QAR2(K),XQ(i)
      • R(b);OGATE,XS(G)::P(F),XR(b)
      • S(g);N_PINS(H)::S(H)
      • S(g);N_GUARD::B(A)
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).