MESON Chess Problem Database

Problem Display
PID: 24702 (r7/1Rp2q2/2p2p2/kpNB3p/1r1N3K/5bQ1/8/4B1n1 w - - 0 1)

Rice, John Michael

The Problemist, 2000

r7/1Rp2q2/2p2p2/kpNB3p/1r1N3K/5bQ1/8/4B1n1

#2

7 + 11

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qxc7#
    • 1...Qe6
      • 2.Qxc7#
    • 1...Qg6
      • 2.Qxc7#
    • 1...Qe8
      • 2.Qxc7#
    • 1...Qg8
      • 2.Qxc7#
    • 1...Qf8
      • 2.Qxc7#
    • 1...Bh1
      • 2.Qa3#
    • 1...Be2
      • 2.Qa3#
    • 1...Bg2
      • 2.Qa3#
    • 1...Be4
      • 2.Sdb3#
      • 2.Sxc6#
      • 2.Qa3#
    • 1...Bg4
      • 2.Sdb3#
      • 2.Sxc6#
      • 2.Qa3#
    • 1...Bxd5
      • 2.Qa3#
    • 1...cxd5
      • 2.Rxb5#
  • Tries
    • 1.Be4?
      • threat
        • 2.Sxc6#
      • 1...Bxe4
        • 2.Qa3#
      • 1...Qd7
        • 2.Sdb3#
      • 1...Qd5
        • 2.Qxc7#
      • 1...Qe6
        • 2.Qxc7#
      • 1...Qe8
        • 2.Sdb3#
        • 2.Qxc7#
      • 1...Ra6!
    • 1.Bxc6?
      • threat
        • 2.Rxb5#
      • 1...Bxc6
        • 2.Qa3#
      • 1...Qc4
        • 2.Qxc7#
      • 1...Be2
        • 2.Qa3#
      • 1...Rb8!
    • 1.Qf4?
      • threat
        • 2.Sdb3#
        • 2.Sxc6#
      • 1...Qxd5
        • 2.Qxc7#
      • 1...cxd5
        • 2.Sdb3#
        • 2.Sc6#
        • 2.Rxb5#
      • 1...Qd7
        • 2.Sdb3#
      • 1...Qe6
        • 2.Sdb3#
        • 2.Qxc7#
      • 1...Qe8
        • 2.Sdb3#
        • 2.Qxc7#
      • 1...Ra6
        • 2.Sdb3#
      • 1...Bd1
        • 2.Sxc6#
      • 1...Bxd5!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Sdb3#
      • 1...Qxc4
        • 2.Qxc7#
      • 1...bxc4
        • 2.Bxb4#
      • 1...Bd1
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(j);N_GUARD,XB(F)::QAB(B),XP(i)
    • Q(j);N_GUARD::QAB(B),XP(i)
    • B(b);OGATE::QAR2(B)
    • B(b);OGATE,XB(F)::QAR2(B)
    • P(g);N_GUARD,XB(F)::R1(G),XP(e)
  • Tries
    • Try
      • B(F);N_SPINS(C)
      • Threat
        • S(C),XP(g)
      • Vars
        • B(b);OGATE,XB(F)::QAR2(B)
        • Q(j);N_GUARD::S(C)
        • Q(j);N_GUARD::QAB(B),XP(i)
      • Refutation
        • R(k);
    • Try
      • B(F);XP(g)
      • Threat
        • R1(G),XP(e)
      • Vars
        • B(b);OGATE,XB(F)::QAR2(B)
        • Q(j);N_GUARD::QAB(B),XP(i)
        • B(b);OGATE::QAR2(B)
      • Refutation
        • R(k);
    • Try
      • Q(B);N_SPINS(C)
      • Threat
        • DUALS(2)
      • Vars
        • Q(j);N_GUARD,XB(F)::QAB(B),XP(i)
        • Q(j);::S(C)
        • R(k);::S(C)
        • B(b);::S(C),XP(g)
      • Refutation
        • B(b);XB(F)
  • Actual
    • B(F);N_SPINS(C)
    • Threat
      • S(C)
    • Vars
      • Q(j);N_GUARD,P_PINS(C),XB(F)::QAB(B),XP(i)
      • P(e);XB(F)::B(A),XR(c)
      • B(b);N_GUARD::S(C),XP(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).