MESON Chess Problem Database

Problem Display
PID: 264935 (3K2n1/bpPP2N1/5p1p/3k1N1R/P4P2/3P4/2r5/nQ4Bb w - - 0 1)

Tarnawiecki, Antonio

The Problemist Supplement, 2022

3K2n1/bpPP2N1/5p1p/3k1N1R/P4P2/3P4/2r5/nQ4Bb

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb5#
    • 1...Ra2
      • 2.Qxb7#
    • 1...Rd2
      • 2.Qxb7#
    • 1...Re2
      • 2.Qxb7#
    • 1...Rg2
      • 2.Qxb7#
    • 1...Rh2
      • 2.Qxb7#
    • 1...Bc5
      • 2.Qxb7#
  • Tries
    • 1.Sd4+?
      • 1...Kd6
        • 2.Se8#
      • 1...f5!
    • 1.Qb3+?
      • 1...Kc6
        • 2.Qe6#
        • 2.Qb5#
        • 2.c8Q#
        • 2.c8R#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Sxb3!
    • 1.Qb4?
      • threat
        • 2.Se7#
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
        • 2.Qb5#
      • 1...Rc6
        • 2.Se3#
        • 2.Se7#
      • 1...Bc5
        • 2.Qxb7#
      • 1...Se7
        • 2.Sxe7#
        • 2.Qd6#
      • 1...Rc5!
    • 1.Qb5+?
      • 1...Bc5
        • 2.Qxb7#
      • 1...Rc5!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Se7#
      • 1...Kxc5
        • 2.Qb5#
      • 1...Kc6
        • 2.Sd4#
      • 1...Rxc5
        • 2.Qxh1#
      • 1...Bxc5
        • 2.Qxb7#
      • 1...Se7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(d);S_CUTB(g),S_CUTR(c),S_FLIGHT::QAB1(A)
    • R(c);N_GUARD::QAB(A),XP(h)
    • B(g);S_CUTR(c)::QAB(A),XP(h)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTP(e)::S(J)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(A),XR(c)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);S_CUTR(c)::QAB(A),XP(h)
      • Refutation
        • R(c);
    • Try
      • Q(A);CHECK
      • Vars
        • B(g);P_SPINB(g),S_CUTR(c)::QAB(A),XP(h)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(B);
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • K(d);OGATEB,P-FLIGHT,XB(B)::QAR1(A)
      • K(d);S_CUTP(e),S_FLIGHT::S(F)
      • R(c);N_GUARD,SBLOCK,XB(B)::QAB(A),XB(b)
      • B(g);SBLOCK,XB(B)::QAB(A),XP(h)
      • S(i);::R(G)+S(F),DCHECK,XS(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).