MESON Chess Problem Database

Problem Display
PID: 7050 (2r5/QbkpN2R/2N1R3/8/P1K4p/1nn3r1/3p3B/7B w - - 0 1)

Rice, John Michael

BCSC Starter, 1998-1999

2r5/QbkpN2R/2N1R3/8/P1K4p/1nn3r1/3p3B/7B

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qa5#
    • 1...Sc1
      • 2.Qa5#
    • 1...Sd4
      • 2.Qa5#
    • 1...Sa5+
      • 2.Qxa5#
    • 1...Sc5
      • 2.Qa5#
    • 1...Sb1
      • 2.Sd5#
    • 1...Sd1
      • 2.Sd5#
    • 1...Sa2
      • 2.Sd5#
    • 1...Se2
      • 2.Sd5#
    • 1...Sxa4
      • 2.Sd5#
    • 1...Se4
      • 2.Sd5#
    • 1...Sb5
      • 2.Sd5#
    • 1...Sd5
      • 2.Sxd5#
    • 1...dxc6
      • 2.Sxc6#
    • 1...dxe6
      • 2.Sf5#
    • 1...d5+
      • 2.Sxd5#
    • 1...d6
      • 2.Sg6#
  • Tries
    • 1.Sxc8?
      • threat
        • 2.Qb8#
      • 1...Kxc8
        • 2.Qb8#
      • 1...Sa5+!
    • 1.Bxg3+?
      • 1...d6
        • 2.Sf5#
        • 2.Sg6#
        • 2.Sg8#
      • 1...hxg3!
  • Keys
    • 1.a5!
      • threat
        • 2.Qb6#
      • 1...Sxa5+
        • 2.Qxa5#
      • 1...d5+
        • 2.Sxd5#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Sf5#
      • 1...d6
        • 2.Sg6#
      • 1...Sa4
        • 2.Sd5#
      • 1...Sd5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • S(b);N_GUARD::QAB(G)
    • S(b);CHECK,N_GUARD::QAB(G),XS(b)
    • S(c);N_GUARD::S(H)
    • S(c);N_GUARD,XP(C)::S(H)
    • S(c);N_GUARD::S(H),XS(c)
    • P(h);XS(E)::R(I)+S(H),XP(h)
    • P(h);XR(F)::R(I)+S(H)
    • P(h);CHECK::R(I)+S(H),DCHECK,XP(h)
    • P(h);N_SPINR(d)::R(I)+S(H)
  • Tries
    • Try
      • S(H);P_PINP(h),XR(i)
      • Threat
        • QAB1(G)
      • Vars
        • K(g);N_SPINB(f),N_SPINP(h),N_SPINR(d),P-FLIGHT,XS(H)::QAR1(G)
      • Refutation
        • S(b);CHECK
    • Try
      • B(B);CHECK,XR(d)
      • Refutation
        • P(e);XB(B)
  • Actual
    • P(C);
    • Threat
      • QAB1(G)
    • Vars
      • S(b);CHECK,OGATE,XP(C)::QAB(G),XS(b)
      • P(h);CHECK::R(I)+S(H),DCHECK,XP(h)
      • P(h);XS(E)::R(I)+S(H),XP(h)
      • P(h);XR(F)::R(I)+S(H)
      • P(h);N_SPINR(d)::R(I)+S(H)
      • S(c);N_GUARD::S(H)
      • S(c);N_GUARD::S(H),XS(c)
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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).