MESON Chess Problem Database

Problem Display
PID: 7075 (3r4/p5n1/3P1PRN/2B1k1Nb/1p3p2/1P6/KR2r3/4Q1nB w - - 0 1)

Froeyman, Helmut

Het Belgisch Schaakbord (L'Echiquier Belge), 1998

3r4/p5n1/3P1PRN/2B1k1Nb/1p3p2/1P6/KR2r3/4Q1nB

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Shf7#
    • 1...Se6
      • 2.Sgf7#
  • Tries
    • 1.Rxe2+?
      • 1...Bxe2
        • 2.Qa1#
      • 1...Sxe2!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qa1#
      • 1...Rxe1
        • 2.Rd5#
      • 1...Rxd6
        • 2.Bxd6#
      • 1...f3
        • 2.Qg3#
      • 1...Re3
        • 2.Rd5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sf3
        • 2.Qxe2#
      • 1...Sf5
        • 2.Shf7#
      • 1...Se6
        • 2.Sgf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);N_PINR(D),OGATE::QAR1(A),XR(b)
    • S(h);SBLOCK::S(K)
    • S(h);SBLOCK::S(G)
  • Tries
    • Try
      • R(D);CHECK,N_SPINR(D),XR(b)
      • Vars
        • B(f);P_SPINB(f),XR(D)::QAB(A)
      • Refutation
        • S(a);P_SPINS(a),XR(D)
  • Actual
    • R(D);
    • Threat
      • QAB(A)
    • Vars
      • R(b);N_PINR(D),N_SPINR(b),XQ(A)::R1(D)
      • R(i);OGATE,XP(H)::B(F),XR(i)
      • P(d);OGATEB::QAB(A)
      • R(b);N_PINR(D)::R1(D)
      • R(b);N_PINR(D),OGATE::QAR1(A),XR(b)
      • S(a);N_GUARD,S_CUTB(f)::QAR(A),XR(b)
      • S(h);SBLOCK::S(K)
      • S(h);SBLOCK::S(G)
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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).