MESON Chess Problem Database

Problem Display
PID: 55418 (q2b2b1/2Ppp2r/1PNk2p1/p1p3Rp/B2p1N1K/6BQ/3R4/6r1 w - - 0 1)

Einat, Paz

9/11th Place, 07. WCCT, 2003-2004

q2b2b1/2Ppp2r/1PNk2p1/p1p3Rp/B2p1N1K/6BQ/3R4/6r1

#2

10 + 13

721 Variantim 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.c8S#
    • 1...Ra1
      • 2.Se6#
    • 1...Rb1
      • 2.Se6#
    • 1...Rc1
      • 2.Se6#
    • 1...Rd1
      • 2.Se6#
    • 1...Rh1
      • 2.Se6#
    • 1...Rf7
      • 2.Rd5#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Be6
      • 2.Sg2#
  • Tries
    • 1.Sb8?
      • threat
        • 2.Qxd7#
        • 2.c8S#
      • 1...Qxb8
        • 2.Qxd7#
      • 1...Bxc7
        • 2.Qxd7#
      • 1...e5
        • 2.c8S#
      • 1...e6
        • 2.c8S#
      • 1...Qh1
        • 2.c8S#
      • 1...Qb7
        • 2.Qxd7#
      • 1...Qa6
        • 2.Qxd7#
      • 1...Rh1
        • 2.Se6#
        • 2.c8S#
      • 1...Be6
        • 2.Sg2#
        • 2.c8S#
      • 1...Qc6!
    • 1.Rxd4+?
      • 1...Bd5
        • 2.Rdxd5#
        • 2.Rgxd5#
      • 1...cxd4!
    • 1.Qe6+?
      • 1...Bxe6
        • 2.Sg2#
      • 1...dxe6!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qxd7#
      • 1...e5
        • 2.Sf5#
      • 1...e6
        • 2.Sc6#
      • 1...Qh1
        • 2.c8S#
      • 1...Qc6
        • 2.Sb5#
      • 1...Qc8
        • 2.Sde6#
      • 1...Rh1
        • 2.Sfe6#
      • 1...Be6
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(k);N_GUARD::P=S
    • R(a);N_GUARD::B(B)+S(E)
    • R(a);N_GUARD,P_PINQ(C)::B(B)+S(E)
    • R(j);S_CUTB(m)::R1(G)
    • B(m);N_GUARD,N_SPINP(b)::R1(G),XB(m)
    • B(m);S_CUTP(i)::B(B)+S(E)
  • Tries
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(k);XS(I)::QAR1(C),XP(h)
        • B(l);XP(J)::QAR1(C),XP(h)
        • P(i);P_PINR(G)::P=S
        • Q(k);P_PINQ(C)::P=S
        • Q(k);::QAR1(C),XP(h)
      • Refutation
        • Q(k);
    • Try
      • R(A);CHECK,XP(b)
      • Refutation
        • P(d);XR(A)
    • Try
      • Q(C);CHECK
      • Vars
        • B(m);SBLOCK,XQ(C)::B(B)+S(E)
      • Refutation
        • P(h);XQ(C)
  • Actual
    • S(I);XP(b)
    • Threat
      • QAR1(C),XP(h)
    • Vars
      • P(i);P_PINR(G),SBLOCK::R(A)+S(I),DCHECK
      • P(i);P_PINR(G),S_CUTB(m)::R(A)+S(I)
      • Q(k);N_GUARD,P_PINQ(C)::P=S
      • Q(k);SBLOCK::R(A)+S(I),DCHECK
      • Q(k);N_GUARD::R(A)+S(I)
      • R(a);N_GUARD,P_PINQ(C)::B(B)+S(E)
      • B(m);S_CUTP(i)::B(B)+S(E)
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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).