MESON Chess Problem Database

Problem Display
PID: 166543 (8/2p1K1p1/2Q4B/1Np1kP1R/4N1P1/4p1p1/b5p1/2r2q2 w - - 0 1)

Burda, Josef

Sachove umeni (Ceskoslovensky sach), 2017

8/2p1K1p1/2Q4B/1Np1kP1R/4N1P1/4p1p1/b5p1/2r2q2

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Bxg7#
    • 1...Qxf5
      • 2.Rxf5#
    • 1...Rc4
      • 2.Qe6#
    • 1...Bb1
      • 2.Qe6#
    • 1...Be6
      • 2.Qxe6#
    • 1...c4
      • 2.Qe6#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe4#
      • 1...Qd3
        • 2.Sf3#
      • 1...Qc4
        • 2.Sf3#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qf4
        • 2.Bxg7#
      • 1...Rc4
        • 2.Qe6#
      • 1...Bb1
        • 2.Qe6#
      • 1...Bd5
        • 2.Qxc7#
      • 1...exd2!
    • 1.Sxc5?
      • threat
        • 2.Sd7#
        • 2.Qe4#
      • 1...Qxb5
        • 2.Qe4#
      • 1...gxh6
        • 2.Qe4#
      • 1...g5
        • 2.Qe4#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qc4
        • 2.Sd7#
      • 1...Qd1
        • 2.Qe4#
      • 1...Qf3
        • 2.Sd3#
        • 2.Sd7#
      • 1...Qf4
        • 2.Sd3#
        • 2.Sd7#
        • 2.Bxg7#
      • 1...Rd1
        • 2.Qe4#
      • 1...Rc4
        • 2.Sd7#
        • 2.Qe6#
      • 1...Bb1
        • 2.Sd7#
        • 2.Qe6#
      • 1...Bd5
        • 2.Qxc7#
      • 1...Be6
        • 2.Qe4#
        • 2.Qxe6#
      • 1...Rxc5!
    • 1.f6+?
      • 1...Qf5
        • 2.Rxf5#
      • 1...g5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Qxf5
        • 2.Sf3#
      • 1...Qd3
        • 2.Sf3#
      • 1...Qc4
        • 2.Sf3#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qf4
        • 2.Bxg7#
      • 1...Rc4
        • 2.Sf7#
      • 1...Bb1
        • 2.Sf7#
      • 1...Bd5
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(b);SBLOCK::B(G),XP(j)
    • Q(b);OGATE,P_SPINQ(b),XP(D)::R1(E),XQ(b)
    • R(a);S_CUTB(c)::QAR1(F)
    • B(c);N_GUARD::QAR1(F)
    • B(c);N_GUARD::QAR1(F),XB(c)
    • P(g);S_CUTB(c)::QAR1(F)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(F)
      • Vars
        • Q(b);N_GUARD::S(A)
        • Q(b);N_GUARD::S(A),XQ(b)
        • Q(b);SBLOCK::B(G),XP(j)
        • R(a);S_CUTB(c)::QAR1(F)
        • B(c);N_GUARD::QAR1(F)
        • B(c);SBLOCK::QAB(F),XP(i)
      • Refutation
        • P(e);XS(A)
    • Try
      • S(A);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XS(C)::QAR1(F)
        • P(j);XB(G)::QAR1(F)
        • P(j);::QAR1(F)
        • Q(b);N_GUARD::S(A),XQ(b)
        • Q(b);::S(A)
        • Q(b);::QAR1(F)
        • R(a);::QAR1(F)
        • B(c);SBLOCK::QAB(F),XP(i)
      • Refutation
        • R(a);XS(A)
    • Try
      • P(D);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::R1(E),XQ(b)
      • Refutation
        • P(j);P_SPINP(j)
  • Actual
    • S(A);
    • Threat
      • QAR1(F)
    • Vars
      • K(h);S_FLIGHT::QAR1(F)
      • Q(b);N_GUARD,XP(D)::S(A)
      • Q(b);N_GUARD::S(A)
      • Q(b);N_GUARD::S(A),XQ(b)
      • Q(b);SBLOCK::B(G),XP(j)
      • R(a);S_CUTB(c)::S(A)
      • B(c);N_GUARD::S(A)
      • B(c);SBLOCK::QAB(F),XP(i)
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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).