MESON Chess Problem Database

Problem Display
PID: 153746 (BbK1N3/3P4/7p/Rn2k2r/R1bN2pP/4p2p/1BQ2n1q/2r5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

1st Prize, Bulletin Ouvrier des Echecs, 1949

BbK1N3/3P4/7p/Rn2k2r/R1bN2pP/4p2p/1BQ2n1q/2r5

#2

10 + 12

15148 Sadier Collection 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Se2#
    • 1...Rxh4
      • 2.Qf5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Be6
      • 2.Se2#
      • 2.Sb3#
      • 2.Sf3#
      • 2.Sxb5#
      • 2.Sf5#
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
  • Tries
    • 1.Sf5+?
      • 1...Ke6
        • 2.d8S#
      • 1...Kf4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qf6#
      • 1...Bf1+
        • 2.Sc2#
      • 1...Ba2+
        • 2.Sc2#
      • 1...Be2+
        • 2.Sc2#
      • 1...Bb3+
        • 2.Sc2#
      • 1...Bd3+
        • 2.Sc2#
      • 1...Bd5+
        • 2.Sc6#
      • 1...Be6+
        • 2.Sc2#
      • 1...Bf7+
        • 2.Sc2#
      • 1...Bg8+
        • 2.Sc2#
      • 1...Kf4
        • 2.Se2#
      • 1...Qf4
        • 2.Sf3#
      • 1...Rf5
        • 2.Qxf5#
      • 1...Se4
        • 2.Qxe4#

There are these versions: 156993

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 3
  • Sets
    • K(i);N_SPINS(h),S_FLIGHT::S(D)
    • R(j);N_GUARD,XP(E)::QAR1(B)
    • R(j);N_GUARD::QAR1(B),XR(j)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(i);N_SPINS(h),P-FLIGHT::P=S
      • Refutation
        • K(i);N_SPINS(h),P_SPINB(f),S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(f);CHECK::B(A)+S(D)
      • B(f);CHECK,N_SPINS(h),SBLOCK::B(A)+S(D),DCHECK
      • B(f);CHECK,P_PINP(G)::B(A)+S(D)
      • K(i);N_SPINS(h),S_FLIGHT::S(D)
      • Q(c);SBLOCK::B(A)+S(D),DCHECK
      • R(j);N_GUARD::QAR1(B),XR(j)
      • S(b);N_GUARD::QAR1(B),XS(b)
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).