MESON Chess Problem Database

Problem Display
PID: 74336 (2rr1N2/PNkp1b1R/Pp2Q3/3R4/8/1K1p2q1/3P3B/7B w - - 0 1)

Eerkes, Allard Pieter

de Vos, F

2nd Prize, Tijdschrift vd KNSB 08. TT, 1938

2rr1N2/PNkp1b1R/Pp2Q3/3R4/8/1K1p2q1/3P3B/7B

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qxd6#
    • 1...Re8
      • 2.Rxd7#
      • 2.Qxd7#
    • 1...Rxf8
      • 2.Rxd7#
      • 2.Qxd7#
    • 1...Bh5
      • 2.Bxg3#
    • 1...Bg6
      • 2.Bxg3#
    • 1...Be8
      • 2.Bxg3#
    • 1...Bg8
      • 2.Bxg3#
    • 1...b5
      • 2.Rc5#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Rc4#
      • 1...b5
        • 2.Rc5#
      • 1...Qf4!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qc3#
      • 1...d6
        • 2.Qc3#
      • 1...Qxe5!
    • 1.Qc6+?
      • 1...dxc6
        • 2.Se6#
      • 1...Kxc6!
  • Keys
    • 1.Rxd3!
      • threat
        • 2.Rc3#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...d6
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::QAB1(G),XQ(b)
    • B(f);P_SPINP(e)::B(C),XQ(b)
    • P(c);N_GUARD::R(E)
  • Tries
    • Try
      • R(J);
      • Threat
        • R(J)
      • Vars
        • P(c);N_GUARD::R(E)
      • Refutation
        • Q(b);
    • Try
      • Q(G);CHECK,N_PINQ(b),P_SPINR(E)
      • Vars
        • K(d);P-FLIGHT::QAR(G)
        • P(e);P_SPINB(f),P_SPINP(e)::QAR(G)
      • Refutation
        • Q(b);P_SPINQ(b),XQ(G)
    • Try
      • Q(G);CHECK,P_SPINR(E)
      • Vars
        • P(e);P_SPINB(f),SBLOCK,XQ(G)::S(K)
      • Refutation
        • K(d);N_SPINQ(b),P-FLIGHT,XQ(G)
  • Actual
    • R(E);P_SPINQ(G),P_SPINR(E),XP(a)
    • Threat
      • R(E)
    • Vars
      • B(f);CHECK,P_SPINP(e),XQ(G)::S(K),XB(f)
      • P(e);N_SPINQ(b),P_SPINB(f)::QAR(G)
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).