MESON Chess Problem Database

Problem Display
PID: 139507 (4q3/1p1rBn2/3bPN2/2p1R1p1/2n2k2/2PP1Npb/4B3/2K3Q1 w - - 0 1)

Reeves, Alfred Christopher

Savournin, Jacques

The Problemist, 2010

4q3/1p1rBn2/3bPN2/2p1R1p1/2n2k2/2PP1Npb/4B3/2K3Q1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Sd5#
    • 1...Sb2
      • 2.Qe3#
    • 1...Sd2
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sa5
      • 2.Qe3#
    • 1...Sb6
      • 2.Qe3#
    • 1...g2
      • 2.Qh2#
    • 1...g4
      • 2.Sd5#
      • 2.Sh5#
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Sd5#
        • 2.Sh5#
      • 1...Bxe6
        • 2.Sh5#
      • 1...Bxe7
        • 2.Sh5#
      • 1...Qh8
        • 2.Sd5#
      • 1...Bg4
        • 2.Sd5#
      • 1...Be5
        • 2.Sh5#
      • 1...Bc7
        • 2.Sh5#
      • 1...Bb8
        • 2.Sh5#
      • 1...Se3
        • 2.Sh5#
        • 2.Qxg3#
      • 1...Sb6
        • 2.Sh5#
      • 1...Sfe5
        • 2.Sd5#
      • 1...Sh6
        • 2.Sd5#
      • 1...Sd8
        • 2.Sd5#
      • 1...Sh8
        • 2.Sd5#
      • 1...Sxg5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Qxg3#
      • 1...Bxe5
        • 2.Sh5#
      • 1...Scxe5
        • 2.Sd5#
        • 2.Sh5#
      • 1...Sfxe5
        • 2.Sd5#
      • 1...cxd4
        • 2.Qxd4#
      • 1...g2
        • 2.Qh2#
      • 1...Bg2
        • 2.Rf5#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Sd2
        • 2.Qe3#
      • 1...g4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • B(b);SBLOCK::S(I)
    • S(c);N_GUARD::QAB1(B)
    • S(c);N_GUARD::QAB1(B),XS(c)
    • P(a);OGATEB::QAB(B)
  • Tries
    • Try
      • R(G);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XP(H)::S(I)
        • B(g);XB(J)::S(I)
        • Q(k);::S(I)
        • B(b);::S(I)
        • B(g);::S(I)
        • S(c);::S(I)
        • S(j);::S(I)
      • Refutation
        • S(j);XR(G)
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • K(d);S_FLIGHT,XR(G)::QAB(B),XP(a)
      • B(g);SBLOCK,XR(G)::S(I)
      • S(j);SBLOCK,XR(G)::S(I)
      • P(e);OGATE,XS(F)::QAR2(B),XP(e)
      • P(a);OGATEB::QAB(B)
      • B(b);N_GUARD::R1(G)
      • B(b);N_GUARD::R1(G),XB(b)
      • S(c);N_GUARD::QAB1(B)
      • P(f);S_CUTB(b)::R1(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).