MESON Chess Problem Database

Problem Display
PID: 49709 (N3K2n/2p1B1p1/2p1k1p1/R1r3p1/3R1b2/1n3Q2/8/1B5q w - - 0 1)

Rice, John Michael

Die Schwalbe, 1965

N3K2n/2p1B1p1/2p1k1p1/R1r3p1/3R1b2/1n3Q2/8/1B5q

#2

7 + 11

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qg4#
    • 1...Rc2
      • 2.Qg4#
    • 1...Rc3
      • 2.Qg4#
    • 1...Rc4
      • 2.Qg4#
    • 1...Re5
      • 2.Sxc7#
    • 1...Be5
      • 2.Qg4#
  • Tries
    • 1.Qe4+?
      • 1...Re5
        • 2.Sxc7#
      • 1...Be5
        • 2.Sxc7#
        • 2.Qg4#
      • 1...Qxe4!
  • Keys
    • 1.Re4+!
      • 1...Kd5
        • 2.Qxb3#
      • 1...Kf5
        • 2.Re1#
      • 1...Re5
        • 2.Qg4#
      • 1...Be5
        • 2.Sxc7#

This is a version

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD::QAB(B)
    • R(d);S_CUTB(c)::S(F),XP(i)
    • B(c);SBLOCK,S_CUTR(d)::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • R(d);P_SPINR(d)::S(F),XP(i)
      • Refutation
        • Q(a);XQ(B)
  • Actual
    • R(C);CHECK
    • Vars
      • K(g);P_SPINR(d),S_FLIGHT::QAB(B),XS(b)
      • K(g);P_SPINB(c),P_SPINR(d),S_FLIGHT::B(A)+R(C)
      • R(d);P_SPINR(d)::QAB(B)
      • B(c);P_SPINB(c)::S(F),XP(i)
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).