MESON Chess Problem Database

Problem Display
PID: 99393 (4Q3/4nBpb/q7/b1p2p2/1ppkPP2/5RN1/4P2r/4BKN1 w - - 0 1)

Schneider, Vilmos

Magyar Sakkelet, 1952

4Q3/4nBpb/q7/b1p2p2/1ppkPP2/5RN1/4P2r/4BKN1

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Bf2#
    • 1...Rxe2
      • 2.S1xe2#
    • 1...Rf2+
      • 2.Bxf2#
    • 1...Rh3
      • 2.Bf2#
    • 1...Rh4
      • 2.Bf2#
    • 1...Rh5
      • 2.Bf2#
    • 1...Rh6
      • 2.Bf2#
    • 1...Sd5
      • 2.Qe5#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sg6
      • 2.Sxf5#
    • 1...Sc8
      • 2.Qe5#
    • 1...Sg8
      • 2.Qe5#
  • Tries
    • 1.Qd7+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Qd6!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qd1#
      • 1...Rf2+
        • 2.Bxf2#
      • 1...Rxe2
        • 2.S1xe2#
      • 1...b3
        • 2.Rd3#
      • 1...c3
        • 2.Bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD,P_PINS(C)::B(A)
    • R(a);XP(D)::S(C),XR(a)
    • R(a);CHECK,N_GUARD::B(A),XR(a)
    • R(a);N_GUARD::B(A)
    • S(i);OGATE::QAB1(J)
    • S(i);N_GUARD,S_CUTQ(h)::QAR(J)
    • S(i);N_GUARD,S_CUTB(k)::S(F),XP(g)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAR1(J),XS(i)
      • Refutation
        • Q(h);P_SPINQ(h)
  • Actual
    • Q(J);
    • Threat
      • QAR(J)
    • Vars
      • R(a);CHECK,N_GUARD::B(A),XR(a)
      • R(a);XP(D)::S(C),XR(a)
      • P(b);P_SPINP(c)::R1(E)
      • P(c);P_PINP(D),P_SPINP(b)::B(A),XP(c)
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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).