MESON Chess Problem Database

Problem Display
PID: 22088 (2n1R3/p1b1r3/K4pn1/3NkPp1/Q5P1/BB1p4/1P2bPP1/3rR3 w - - 0 1)

Nagy, Odon

1st Prize, Feuille d'Avis de Lausanne, 1924

2n1R3/p1b1r3/K4pn1/3NkPp1/Q5P1/BB1p4/1P2bPP1/3rR3

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re6+
      • 2.Rxe6#
    • 1...d2+
      • 2.Rxe2#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qe4#
      • 1...Re6+
        • 2.Rxe6#
      • 1...d2+
        • 2.Rxe2#
      • 1...Sd6!
    • 1.Bc5?
      • threat
        • 2.Qd4#
      • 1...Re6+
        • 2.Rxe6#
      • 1...d2+
        • 2.Rxe2#
      • 1...Ra1!
    • 1.f3?
      • threat
        • 2.Qe4#
      • 1...Re6+
        • 2.Rxe6#
      • 1...d2+
        • 2.Rxe2#
      • 1...Sd6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sc6#
      • 1...d2+
        • 2.Sd3#
      • 1...Kd4
        • 2.Sc6#
      • 1...Ke4
        • 2.Sc6#
      • 1...Kf4
        • 2.Sxd3#
      • 1...Kd6
        • 2.Sxd3#
      • 1...Rc1
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(j);CHECK,OGATE::R1(L),XR(j)
    • P(c);CHECK,N_GUARD::R(A),XB(b)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(G)
      • Vars
        • R(j);CHECK,OGATE::R1(L),XR(j)
        • P(c);CHECK,N_GUARD::R(A),XB(b)
      • Refutation
        • S(k);
    • Try
      • B(E);
      • Threat
        • QAB1(G)
      • Vars
        • R(j);CHECK,OGATE::R1(L),XR(j)
        • P(c);CHECK,N_GUARD::R(A),XB(b)
      • Refutation
        • R(a);P_PINQ(G)
    • Try
      • P(C);
      • Threat
        • QAR1(G)
      • Vars
        • R(j);CHECK,OGATE::R1(L),XR(j)
        • P(c);CHECK,N_GUARD::R(A),XB(b)
      • Refutation
        • S(k);
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • P(c);CHECK,S_CUTR(a)::S(I)
      • K(d);N_SPINB(b),N_SPINR(j),S_FLIGHT::QAR(G)+S(I),DCHECK
      • K(d);P-FLIGHT::QAR(G)+S(I)
      • K(d);N_SPINB(b),N_SPINR(j),S_FLIGHT::QAR(G)+S(I),DCHECK,XP(c)
      • K(d);N_SPINB(b),N_SPINR(j),S_FLIGHT::B(E)+S(I),XP(c)
      • R(a);N_GUARD::S(I),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).