MESON Chess Problem Database

Problem Display
PID: 69153 (1Nn2K2/2rp3Q/1P1k2pn/2pB1pPq/b1P2P2/1p1NB3/8/3RR3 w - - 0 1)

Maeder, Thomas

3rd Prize, Tel Aviv, 1996

1Nn2K2/2rp3Q/1P1k2pn/2pB1pPq/b1P2P2/1p1NB3/8/3RR3

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Qxg6#
    • 1...Qe2
      • 2.Qxg6#
    • 1...Qf3
      • 2.Qxg6#
    • 1...Qg4
      • 2.Qxg6#
    • 1...Qh1
      • 2.Qxg6#
    • 1...Qh2
      • 2.Qxg6#
    • 1...Qh3
      • 2.Qxg6#
    • 1...Qh4
      • 2.Qxg6#
    • 1...Rc6
      • 2.Qxd7#
    • 1...Ra7
      • 2.Bxc5#
    • 1...Rb7
      • 2.Bxc5#
    • 1...Bc6
      • 2.Bxc5#
    • 1...Sxb6
      • 2.Qe7#
    • 1...Sa7
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Sxc5#
      • 1...Ke6
        • 2.Bxc5#
      • 1...Qxf3
        • 2.Qxg6#
      • 1...Sxb6
        • 2.Qe7#
      • 1...Qh2
        • 2.Qxg6#
      • 1...Bc6
        • 2.Bxc5#
      • 1...Se7
        • 2.Qxe7#
      • 1...b2!
    • 1.Qxd7+?
      • 1...Rxd7
        • 2.Bxc5#
      • 1...Bxd7!
    • 1.Qg7?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...Qxg5
        • 2.Qe5#
      • 1...Sf7
        • 2.Qf6#
      • 1...Sg8
        • 2.Qe5#
      • 1...Sg4!
    • 1.Qh8?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...Qxg5
        • 2.Qe5#
      • 1...Sf7
        • 2.Qf6#
      • 1...Sg8
        • 2.Qe5#
      • 1...Sg4!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Bxc5#
      • 1...Ke6
        • 2.Sxc5#
      • 1...Rxc6
        • 2.Qxd7#
      • 1...Qe2
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(e);N_GUARD,XR(A)::QAR(J),XP(g)
    • Q(e);N_GUARD::QAR(J),XP(g)
    • R(i);N_GUARD,S_CUTB(b)::QAR1(J),XP(j)
    • R(i);N_GUARD::B(D),XP(c)
    • B(b);S_CUTR(i)::B(D),XP(c)
    • S(k);N_GUARD,XP(I)::QAB1(J)
    • S(k);N_GUARD::QAB1(J)
    • S(k);N_GUARD::QAB1(J),XS(k)
  • Tries
    • Try
      • B(G);
      • Threat
        • R(A)+S(C),XP(c)
      • Vars
        • K(f);P-FLIGHT::R(B)+B(D),XP(c)
        • Q(e);N_GUARD,XB(G)::QAR(J),XP(g)
        • S(k);N_GUARD,XP(I)::QAB1(J)
        • Q(e);N_GUARD::QAR(J),XP(g)
        • B(b);S_CUTR(i)::B(D),XP(c)
        • S(k);N_GUARD::QAB1(J),XS(k)
      • Refutation
        • P(a);
    • Try
      • Q(J);CHECK,XP(j)
      • Vars
        • R(i);XQ(J)::B(D),XP(c)
      • Refutation
        • B(b);XQ(J)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XP(H)::QAB1(J)
        • S(h);::QAR2(J)
        • S(h);::QAB1(J)
      • Refutation
        • S(h);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);XP(H)::QAB1(J)
        • S(h);::QAR2(J)
        • S(h);::QAB1(J)
      • Refutation
        • S(h);
  • Actual
    • B(G);
    • Threat
      • B(D),XP(c)
    • Vars
      • K(f);P-FLIGHT::S(C),XP(c)
      • R(i);N_GUARD,XB(G)::QAR1(J),XP(j)
      • Q(e);N_GUARD::QAR(J),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).