MESON Chess Problem Database

Problem Display
PID: 273332 (1nbB4/4Rq2/N1Bkppn1/1Pp5/3Npp2/1Q6/K7/8 w - - 0 1)

Monreal, Pierre

Schakend Nederland, 1961

1nbB4/4Rq2/N1Bkppn1/1Pp5/3Npp2/1Q6/K7/8

#2

8 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
    • 1...Sxe7
      • 2.Bc7#
  • Tries
    • 1.Sf5+?
      • 1...Ke5
        • 2.Qd5#
      • 1...exf5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sf3#
      • 1...e5+
        • 2.Se6#
      • 1...Ke5
        • 2.Bc7#
      • 1...Sxe7
        • 2.Bc7#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Se5
        • 2.Sf5#
      • 1...f3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(e),S_FLIGHT::QAR1(B)
    • S(g);SBLOCK,XR(G)::B(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT::QAR1(B)
      • Refutation
        • P(e);P_PINQ(B),XS(C)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+S(C)
    • Vars
      • P(e);CHECK,SBLOCK::QAR(B)+S(C)
      • K(d);N_GUARD,P_SPINP(e),S_FLIGHT::B(H)
      • S(g);SBLOCK,XR(G)::B(H)
      • S(i);XB(F)::QAR(B)+S(C),XS(i)
      • P(c);OGATE,P_SPINP(c),XS(C)::QAR2(B),XP(c)
      • S(g);SBLOCK::QAR(B)+S(C),DCHECK
      • P(b);::QAR(B)+S(C),XP(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).