MESON Chess Problem Database

Problem Display
PID: 143156 (8/qP4b1/p1pQ4/RNN4n/1pkp1p2/5R2/3P3K/1r1B1bB1 w - - 0 1)

Maruta, Hidajat (Tjoa Giok Hing)

US Problem Bulletin, 1963

8/qP4b1/p1pQ4/RNN4n/1pkp1p2/5R2/3P3K/1r1B1bB1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bb3#
    • 1...Rc1
      • 2.Bb3#
    • 1...Rb3
      • 2.Bxb3#
    • 1...Bg2
      • 2.d3#
    • 1...Bh3
      • 2.d3#
    • 1...Bh6
      • 2.Qxd4#
    • 1...Bf8
      • 2.Qxd4#
    • 1...Sf6
      • 2.Qxd4#
    • 1...d3
      • 2.Qe6#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Qe6#
      • 1...Qxc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...b3
        • 2.Ra4#
      • 1...Bh3
        • 2.Be2#
      • 1...Sf6!
    • 1.Sxa7?
      • threat
        • 2.Qe6#
      • 1...b3
        • 2.Ra4#
      • 1...Sf6
        • 2.Qxd4#
      • 1...Bh3!
    • 1.Sc7?
      • threat
        • 2.Qe6#
      • 1...Qxc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...b3
        • 2.Ra4#
      • 1...Sf6
        • 2.Qxd4#
      • 1...Bh3!
    • 1.Sb3?
      • threat
        • 2.Qe6#
      • 1...Rxb3
        • 2.Bxb3#
      • 1...Bh3
        • 2.d3#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Sf6!
    • 1.Sa4?
      • threat
        • 2.Qe6#
      • 1...Bh3
        • 2.d3#
      • 1...Qc5
        • 2.Qxc5#
      • 1...b3
        • 2.Sa3#
      • 1...Sf6!
    • 1.Se4?
      • threat
        • 2.Qe6#
      • 1...Bh3
        • 2.d3#
      • 1...Qc5
        • 2.Qxc5#
      • 1...b3
        • 2.Sa3#
      • 1...Sf6!
    • 1.Be2+?
      • 1...d3
        • 2.Qxd3#
        • 2.Qe6#
      • 1...Bxe2!
    • 1.Rc3+?
      • 1...dxc3
        • 2.Qe6#
      • 1...bxc3!
    • 1.Qd5+?
      • 1...cxd5
        • 2.Sd6#
      • 1...Kxd5!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qe6#
      • 1...Sf6
        • 2.Se5#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Bh3
        • 2.d3#
      • 1...b3
        • 2.Sa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(A)
    • R(a);N_GUARD::B(A),XR(a)
    • B(b);N_GUARD::P(C)
    • B(k);N_GUARD::QAR1(I),XP(e)
    • S(g);S_CUTB(k)::QAR1(I),XP(e)
    • P(e);::QAB(I)
  • Tries
    • Try
      • S(G);XP(e)
      • Threat
        • QAB(I)
      • Vars
        • P(c);OGATEB::R(F)
        • B(b);N_GUARD::B(A)
      • Refutation
        • S(g);
    • Try
      • S(G);XQ(j)
      • Threat
        • QAB(I)
      • Vars
        • P(c);OGATEB::R(F)
        • S(g);S_CUTB(k)::QAR1(I),XP(e)
      • Refutation
        • B(b);
    • Try
      • S(G);
      • Threat
        • QAB(I)
      • Vars
        • P(c);OGATEB::R(F)
        • S(g);S_CUTB(k)::QAR1(I),XP(e)
      • Refutation
        • B(b);
    • Try
      • S(H);
      • Threat
        • QAB(I)
      • Vars
        • R(a);OGATE,XS(H)::B(A),XR(a)
        • B(b);N_GUARD::P(C)
        • Q(j);N_GUARD::QAR1(I),XQ(j)
      • Refutation
        • S(g);
    • Try
      • S(H);
      • Threat
        • QAB(I)
      • Vars
        • B(b);N_GUARD::P(C)
        • Q(j);N_GUARD::QAR1(I),XQ(j)
        • P(c);N_GUARD::S(G)
      • Refutation
        • S(g);
    • Try
      • S(H);
      • Threat
        • QAB(I)
      • Vars
        • B(b);N_GUARD::P(C)
        • Q(j);N_GUARD::QAR1(I),XQ(j)
        • P(c);N_GUARD::S(G)
      • Refutation
        • S(g);
    • Try
      • B(A);CHECK
      • Refutation
        • B(b);XB(A)
    • Try
      • R(E);CHECK
      • Vars
        • P(e);XR(E)::QAB(I)
      • Refutation
        • P(c);XR(E)
    • Try
      • Q(I);CHECK
      • Vars
        • P(i);SBLOCK,XQ(I)::S(G)
      • Refutation
        • K(d);S_FLIGHT,XQ(I)
  • Actual
    • S(H);
    • Threat
      • QAB(I)
    • Vars
      • S(g);S_CUTB(k)::S(H)
      • Q(j);N_GUARD::QAR1(I),XQ(j)
      • B(b);N_GUARD::P(C)
      • P(c);N_GUARD::S(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).