MESON Chess Problem Database

Problem Display
PID: 90415 (3KN1n1/5Q2/1P3P2/RP3k2/3pb2R/3b1p2/2B5/8 w - - 0 1)

Ceriani, Luigi

Die Schwalbe, 1930

3KN1n1/5Q2/1P3P2/RP3k2/3pb2R/3b1p2/2B5/8

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qh5#
    • 1...Bxb5
      • 2.Rxb5#
    • 1...Bc6
      • 2.bxc6#
    • 1...Sxf6
      • 2.Qxf6#
  • Tries
    • 1.Sg7+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kg5!
    • 1.Qd5+?
      • 1...Kg6
        • 2.Qh5#
      • 1...Bxd5!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Qh5#
      • 1...Bxb5+
        • 2.Rxb5#
      • 1...Bc6+
        • 2.bxc6#
      • 1...Sxf6+
        • 2.Qxf6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kg5
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::QAR1(G)
    • B(a);OGATE,P_SPINB(d),XP(D)::R(C),XB(a)
    • B(d);OGATE,P_SPINB(a)::R(C)+P(D),XB(d)
    • S(f);OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(G)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • B(d);P_SPINB(a),XQ(G)
  • Actual
    • K(H);P-FLIGHT
    • Threat
      • QAR2(G)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(d),XP(D)::R(C),XB(a)
      • B(d);CHECK,OGATE,P_SPINB(a)::R(C)+P(D),XB(d)
      • S(f);CHECK,OGATE,P_SPINS(f),XP(F)::QAR1(G),XS(f)
      • K(e);P-FLIGHT::QAR1(G)
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).