MESON Chess Problem Database

Problem Display
PID: 173902 (3B4/2pR3p/1b2P3/rR1Pk2P/5pK1/1N1rpPP1/1nQ1n3/8 w - - 0 1)

Dragoescu, Radu

Boletim da UBP, 1985

3B4/2pR3p/1b2P3/rR1Pk2P/5pK1/1N1rpPP1/1nQ1n3/8

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qe4#
      • 2.Qf5#
    • 1...Rd2
      • 2.Qe4#
      • 2.Qf5#
    • 1...Rxb3
      • 2.Qe4#
    • 1...Rc3
      • 2.Qe4#
      • 2.Qf5#
    • 1...Rd4
      • 2.Qf5#
    • 1...Rxd5
      • 2.Qe4#
      • 2.Qf5#
    • 1...Bd4
      • 2.Qxc7#
    • 1...Ba7
      • 2.Qxc7#
    • 1...Sc1
      • 2.gxf4#
    • 1...Sg1
      • 2.gxf4#
    • 1...Sc3
      • 2.gxf4#
    • 1...Sd4
      • 2.gxf4#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Bf6#
      • 1...Rxd5
        • 2.Qe4#
        • 2.Qf5#
      • 1...h6+!
    • 1.Sxa5?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Sc6#
        • 2.Bf6#
      • 1...Rxd5
        • 2.Qe4#
      • 1...Rc3
        • 2.Qe4#
      • 1...Sd4
        • 2.gxf4#
      • 1...c6
        • 2.Sxc6#
      • 1...Bxa5!
    • 1.Bxc7+?
      • 1...Kf6
        • 2.Rf7#
      • 1...Bxc7!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Bf6#
      • 1...Rxd4
        • 2.Qf5#
      • 1...Bxd4
        • 2.Qxc7#
      • 1...Sxd4
        • 2.gxf4#
      • 1...Rc3
        • 2.Qe4#
      • 1...c6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(c);OGATE,XS(B)::QAR1(A)
    • R(c);OGATE::QAR1(A)
    • B(h);N_GUARD::QAB(A),XP(i)
    • S(b);N_GUARD::P(D),XP(e)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • B(K)
      • Refutation
        • P(j);CHECK
    • Try
      • S(B);XR(f)
      • Threat
        • S(B)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(G)::QAR1(A)
        • R(c);OGATE::QAR1(A)
        • S(b);N_GUARD,SBLOCK::P(D),XP(e)
        • P(i);::S(B),XP(i)
      • Refutation
        • B(h);XS(B)
    • Try
      • B(K);CHECK,XP(i)
      • Vars
        • K(g);S_FLIGHT::R1(J)
      • Refutation
        • B(h);XB(K)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(g);S_FLIGHT,XS(B)::B(K)
      • R(c);OGATE,SBLOCK,XS(B)::QAR1(A)
      • B(h);N_GUARD,SBLOCK,XS(B)::QAB(A),XP(i)
      • S(b);N_GUARD,SBLOCK,XS(B)::P(D),XP(e)
      • R(c);OGATE::QAR1(A)
      • P(i);::S(B),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).