MESON Chess Problem Database

Problem Display
PID: 10019 (K1R4b/4Qp2/2P5/p2k1p2/r7/3PR3/N3N3/5B2 w - - 0 1)

Kapralos, Demetrius N

Problem (Zagreb), 1961

K1R4b/4Qp2/2P5/p2k1p2/r7/3PR3/N3N3/5B2

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Bg2#
    • 1...Ra3
      • 2.Bg2#
    • 1...Rd4
      • 2.Sac3#
      • 2.Sec3#
    • 1...Bc3
      • 2.Saxc3#
    • 1...Bd4
      • 2.Sf4#
      • 2.Bg2#
    • 1...Be5
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...f6
      • 2.Sac3#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Rd8#
      • 1...Be5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Rb4+!
    • 1.Sec3+?
      • 1...Kd4
        • 2.Rd8#
        • 2.Qa7#
      • 1...Bxc3!
    • 1.Sf4+?
      • 1...Kd4
        • 2.Rd8#
        • 2.Qa7#
      • 1...Rxf4!
    • 1.Re6?
      • threat
        • 2.Rd8#
        • 2.Qd6#
      • 1...Be5
        • 2.Rxe5#
      • 1...fxe6!
    • 1.d4?
      • threat
        • 2.Qc5#
      • 1...Kc4
        • 2.Qc5#
      • 1...Rxd4
        • 2.Sec3#
      • 1...Bxd4
        • 2.Sf4#
      • 1...Rc4
        • 2.Bg2#
        • 2.Qd8#
        • 2.Qd7#
      • 1...Be5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rd8#
      • 1...Kxd4
        • 2.Rd8#
      • 1...Rxd4
        • 2.Sc3#
      • 1...Bxd4
        • 2.Bg2#
      • 1...Be5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD,XS(B)::B(A)
    • R(a);N_GUARD::B(A)
    • B(f);N_GUARD::S(B),XB(f)
    • P(e);S_CUTB(f)::S(B)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • R(I)
      • Refutation
        • R(a);CHECK
    • Try
      • S(C);CHECK
      • Refutation
        • B(f);XS(C)
    • Try
      • S(C);CHECK
      • Refutation
        • R(a);XS(C)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_GUARD::R1(E),XB(f)
      • Refutation
        • P(e);XR(E)
    • Try
      • P(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(c);S_FLIGHT::QAR1(G)
        • R(a);SBLOCK,XP(D)::S(C)
        • B(f);SBLOCK,XP(D)::S(C)
      • Refutation
        • B(f);
  • Actual
    • S(C);
    • Threat
      • R(I)
    • Vars
      • K(c);P-FLIGHT,XS(C)::R(I)
      • R(a);SBLOCK,XS(C)::S(B)
      • B(f);SBLOCK,XS(C)::B(A)
      • B(f);N_GUARD::QAR1(G),XB(f)
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).