MESON Chess Problem Database

Problem Display
PID: 264156 (7B/1K3p2/Q2pPr2/1ppk1p2/1R1P4/2b2P2/8/2R4B w - - 0 1)

Willemsens, Luis Cornelis

Tijdschrift vd KNSB, 1959

7B/1K3p2/Q2pPr2/1ppk1p2/1R1P4/2b2P2/8/2R4B

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Qc6#
    • 1...fxe6
      • 2.Qc6#
      • 2.f4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qxd6#
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Rxe6
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...cxb4!
  • Keys
    • 1.dxc5!
      • threat
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Qxb5#
      • 1...Ke5
        • 2.Qxd6#
      • 1...Kxe6
        • 2.Qxd6#
      • 1...Rxe6
        • 2.Qc6#
      • 1...dxc5
        • 2.f4#
      • 1...Be5
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK,XP(G)::QAB1(F)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • QAR1(F),XP(f)
      • Vars
        • K(d);P_SPINP(f),S_FLIGHT,XP(G)::QAR1(F),XP(f)
      • Refutation
        • P(c);XR(D)
  • Actual
    • P(E);XP(c)
    • Threat
      • QAR1(F),XP(f)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINB(a),XP(E)::QAR1(F),XP(b)
      • K(d);P-FLIGHT,P_SPINR(g)::QAB1(F),XP(f)
      • K(d);P_SPINP(f),S_FLIGHT,XP(G)::QAR1(F),XP(f)
      • R(g);SBLOCK,XP(G)::QAB1(F)
      • P(f);SBLOCK,XP(E)::B(B)+P(C)
      • B(a);SBLOCK::QAB(F)
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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).