MESON Chess Problem Database

Problem Display
PID: 72736 (8/4p1p1/8/3b1k2/4RPN1/1B4K1/3P2Q1/8 w - - 0 1)

Spinhoven, FA

Tijdschrift vd KNSB, 1936

8/4p1p1/8/3b1k2/4RPN1/1B4K1/3P2Q1/8

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...g6
      • 2.Re5#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Re5#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...e5
        • 2.Rxe5#
      • 1...Kg6!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qxd5#
      • 1...Kxe6
        • 2.Qxd5#
      • 1...Bxg2
        • 2.Se3#
      • 1...Bxb3
        • 2.Qe4#
      • 1...Bxe6
        • 2.Bc2#
      • 1...Bf3
        • 2.Se3#
      • 1...Bc4
        • 2.Qe4#
      • 1...Be4
        • 2.Se3#
        • 2.Qxe4#
      • 1...Bc6
        • 2.Se3#
      • 1...Bb7
        • 2.Se3#
      • 1...Ba8
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • P(d);SBLOCK::R1(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • B(C)+R(E),DCHECK
      • Vars
        • B(a);OGATE,P_SPINB(a),XR(E)::QAB1(B),XB(a)
        • P(c);::B(C)+R(E),DCHECK,XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAR2(B),XB(a)
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT,XR(E)::QAB1(B),XB(a)
      • B(a);XQ(B)::S(G)
      • B(a);N_GUARD,XB(C)::QAB1(B)
      • B(a);N_GUARD,SBLOCK,XR(E)::B(C)
      • B(a);::S(G)
      • B(a);N_GUARD::QAB1(B)
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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).