MESON Chess Problem Database

Problem Display
PID: 173643 (5KBB/2P1PR1N/1Qpp4/P1pk1P2/R1N5/1P2rPb1/2P1n3/3n2r1 w - - 0 1)

Boros, Sandor

4th Prize, Magyar Sakkvilag, 1935

5KBB/2P1PR1N/1Qpp4/P1pk1P2/R1N5/1P2rPb1/2P1n3/3n2r1

#2

15 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe7
      • 2.Rxe7#
    • 1...Sb2
      • 2.Sxe3#
    • 1...Sf2
      • 2.Sxe3#
    • 1...Sdc3
      • 2.Sxe3#
    • 1...Sd4
      • 2.Sf6#
  • Tries
    • 1.Rf6+?
      • 1...Kd4
        • 2.Rxd6#
      • 1...Re6!
    • 1.Rg7+?
      • 1...Kd4
        • 2.Rg4#
      • 1...Re6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxc6#
      • 1...Rxe5
        • 2.Sf6#
      • 1...Bxe5
        • 2.Rg7#
      • 1...dxe5
        • 2.Rf6#
      • 1...Sd4
        • 2.c4#
      • 1...c4
        • 2.bxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(d);OGATE,XP(J)::B(N)+R(K),XR(d)
    • S(a);N_GUARD::S(E),XR(d)
    • S(c);SBLOCK::S(L)
  • Tries
    • Try
      • R(K);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(f)::B(O)+R(K),DCHECK,XP(i)
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • R(K);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(f)::B(O)+R(K),DCHECK
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • S(E);
    • Threat
      • QAB1(H),XP(h)
    • Vars
      • R(d);SBLOCK,XS(E)::S(L)
      • B(e);SBLOCK,XS(E)::B(N)+R(K)
      • P(i);SBLOCK,XS(E)::B(N)+R(K)
      • S(c);SBLOCK::P(A)
      • P(f);OGATE::P(B),XP(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).