MESON Chess Problem Database

Problem Display
PID: 73968 (8/p1B1K3/8/2k1Np2/P1br1N2/P2p2n1/1r4q1/1R1R2QB w - - 0 1)

Apro, Laszlo

Tijdschrift vd KNSB, 1938

8/p1B1K3/8/2k1Np2/P1br1N2/P2p2n1/1r4q1/1R1R2QB

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Sd7#
    • 1...Qh3
      • 2.Sd7#
    • 1...Qb7
      • 2.Sd7#
    • 1...Qa8
      • 2.Sd7#
    • 1...Qc2
      • 2.Sd7#
    • 1...Qd2
      • 2.Sd7#
    • 1...Qh2
      • 2.Sd7#
    • 1...Ra2
      • 2.Bd6#
    • 1...Rc2
      • 2.Bd6#
    • 1...Rd2
      • 2.Bd6#
    • 1...Re2
      • 2.Bd6#
    • 1...Rb4
      • 2.axb4#
    • 1...Rb8
      • 2.Bd6#
    • 1...Bd5
      • 2.Sfxd3#
  • Tries
    • 1.Se6+?
      • 1...Kd5
        • 2.Qxd4#
      • 1...Bxe6!
  • Keys
    • 1.Rdc1!
      • threat
        • 2.Rxc4#
      • 1...Qxg1
        • 2.Se6#
      • 1...Rf2
        • 2.Rb5#
      • 1...Qd5
        • 2.Sfxd3#
      • 1...Qc2
        • 2.Sd7#
      • 1...Qf2
        • 2.Se6#
      • 1...Rc2
        • 2.Bd6#
      • 1...Rb4
        • 2.axb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(b);::S(H)
    • Q(b);P_PINB(I)::S(H)
    • R(a);::B(I)
    • R(a);P_PINS(H)::B(I)
    • R(a);OGATE::P(E),XR(a)
    • B(e);N_GUARD,SBLOCK::S(G),XP(c)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(g);N_SPINR(f),P-FLIGHT,P_SPINQ(b)::QAR1(C),XR(f)
      • Refutation
        • B(e);XS(G)
  • Actual
    • R(B);P_PINB(e)
    • Threat
      • R1(B),XB(e)
    • Vars
      • Q(b);N_SPINR(f),XQ(C)::S(G)
      • R(a);N_SPINR(f),OGATE::R1(A)
      • Q(b);::S(G),XP(c)
      • Q(b);N_SPINB(e)::S(H)
      • Q(b);N_SPINR(f)::S(G)
      • R(a);N_SPINB(e)::B(I)
      • R(a);OGATE::P(E),XR(a)
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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).