MESON Chess Problem Database

Problem Display
PID: 187029 (Q7/4p2p/1p3P1P/p2p4/4k1n1/3NPRnK/2P2pBb/8 w - - 0 1)

Rothwell, Stephen

Landeszeitung fur die Luneburger Heide, 2001

(First published on Sat Feb 10 2001)

Q7/4p2p/1p3P1P/p2p4/4k1n1/3NPRnK/2P2pBb/8

#2

9 + 10

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Rg3#
    • 1...Sxe3
      • 2.Rf4#
    • 1...Se5
      • 2.Sxf2#
  • Tries
    • 1.Sc5+?
      • 1...Ke5
        • 2.Qb8#
      • 1...bxc5!
    • 1.Qc8?
      • threat
        • 2.Rxg3#
        • 2.Qxg4#
      • 1...Sxe3
        • 2.Rf4#
      • 1...Sxf6
        • 2.Rxg3#
        • 2.Qe6#
      • 1...Sxh6
        • 2.Rxg3#
        • 2.Qe6#
      • 1...d4
        • 2.Rxg3#
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qa8#
      • 1...f1Q
        • 2.Qxg4#
      • 1...f1B
        • 2.Qxg4#
      • 1...f1R
        • 2.Qxg4#
      • 1...Sf1
        • 2.Rg3#
        • 2.Qf5#
      • 1...Sh1
        • 2.Rg3#
        • 2.Qf5#
      • 1...Se2
        • 2.Rg3#
        • 2.Qf5#
      • 1...Sf5
        • 2.Rg3#
        • 2.Qxf5#
      • 1...Sh5
        • 2.Rg3#
        • 2.Qf5#
      • 1...Se5
        • 2.Sxf2#
      • 1...e6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxg4#
      • 1...Sxe3
        • 2.Rf4#
      • 1...Sxf6
        • 2.Qe6#
      • 1...Sxh6
        • 2.Qe6#
      • 1...Sf1
        • 2.Qxh7#
      • 1...Sh1
        • 2.Qxh7#
      • 1...Se2
        • 2.Qxh7#
      • 1...Sf5
        • 2.Rg3#
      • 1...Sh5
        • 2.Qxh7#
      • 1...Se5
        • 2.Sxf2#
      • 1...d4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(B)+R(E)
    • S(e);SBLOCK,XP(D)::B(B)+R(E),DCHECK
    • S(e);N_GUARD,SBLOCK::S(C),XP(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);N_SPINP(g),P-FLIGHT::QAB(I)
      • Refutation
        • P(h);XS(C)
    • Try
      • Q(I);N_PINP(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);SBLOCK,XP(D)::B(B)+R(E),DCHECK
        • P(a);P_PINB(B)::QAR2(I),XS(e)
        • P(a);::QAR2(I),XS(e)
        • S(e);N_GUARD,SBLOCK::S(C),XP(a)
      • Refutation
        • P(i);
  • Actual
    • Q(I);N_PINP(g)
    • Threat
      • QAR2(I),XS(e)
    • Vars
      • S(e);SBLOCK,XP(D)::B(B)+R(E),DCHECK
      • S(e);N_GUARD,XP(G)::QAR2(I)
      • S(e);N_GUARD,XP(H)::QAR2(I)
      • S(c);N_GUARD::QAB(I),XP(j)
      • S(c);SBLOCK::B(B)+R(E)
      • S(e);N_GUARD,SBLOCK::S(C),XP(a)
      • P(g);OGATEB::QAB(I)
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).