MESON Chess Problem Database

Problem Display
PID: 239654 (4NK1Q/B1Np3B/3P4/2n1PP2/4k3/1pRnP1bR/3p1pP1/4r3 w - - 0 1)

Pituk, Alexander

Nepszava, 1938

4NK1Q/B1Np3B/3P4/2n1PP2/4k3/1pRnP1bR/3p1pP1/4r3

#2

13 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Rc4#
    • 1...Bh2
      • 2.Rc4#
    • 1...Bf4
      • 2.Rc4#
    • 1...Bh4
      • 2.Rc4#
    • 1...Bxe5
      • 2.f6#
    • 1...Sxe5
      • 2.Sf6#
    • 1...Sa4
      • 2.Rc4#
    • 1...Sa6
      • 2.Rc4#
    • 1...Se6+
      • 2.fxe6#
    • 1...Sb7
      • 2.Rc4#
  • Tries
    • 1.f6+?
      • 1...Kxe5
        • 2.Rh5#
        • 2.f7#
      • 1...Kxe3!
  • Keys
    • 1.e6!
      • threat
        • 2.Qd4#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Sxe6+
        • 2.fxe6#
      • 1...Kxe3
        • 2.Qe5#
      • 1...Rxe3
        • 2.Rc4#
      • 1...Be5
        • 2.f6#
      • 1...Se5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);SBLOCK,XP(C)::R(B)
    • B(f);::R(B)
    • B(f);SBLOCK,XP(E)::B(J)+P(F)
    • S(e);SBLOCK,XP(E)::S(K)
    • S(h);::R(B)
    • S(h);CHECK,OGATE::B(J)+P(F),XS(h)
  • Tries
    • Try
      • P(F);CHECK
      • Refutation
        • K(g);P-FLIGHT,P_SPINB(f),P_SPINS(e),XP(C)
  • Actual
    • P(E);
    • Threat
      • QAR1(M)
    • Vars
      • B(f);CHECK,XP(G)::S(K),XB(f)
      • S(h);CHECK,OGATE,XP(E)::B(J)+P(F),XS(h)
      • K(g);P-FLIGHT,P_SPINB(f),P_SPINS(e),XP(C)::QAR2(M)
      • R(a);SBLOCK,XP(C)::R(B)
      • B(f);SBLOCK::B(J)+P(F)
      • S(e);SBLOCK::S(K)
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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).