MESON Chess Problem Database

Problem Display
PID: 267064 (5R2/4KN2/1BpP4/2p3p1/1RN1k3/2p5/Q2PrP2/5B2 w - - 0 1)

Ceriani, Luigi

Chess Amateur (The), 1927

5R2/4KN2/1BpP4/2p3p1/1RN1k3/2p5/Q2PrP2/5B2

#2

11 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3+
      • 2.Sce5#
    • 1...Kd4+
      • 2.Sce5#
    • 1...Kd5+
      • 2.Se3#
  • Tries
    • 1.Bg2+?
      • 1...Kd4+
        • 2.Sce5#
      • 1...Kf4+
        • 2.Sfe5#
      • 1...Kf5+
        • 2.Sfe5#
      • 1...Kd3+!
    • 1.Qc2+?
      • 1...Kf3+
        • 2.Sfe5#
      • 1...Kd4+
        • 2.Se3#
      • 1...Kf4+
        • 2.Sfe5#
      • 1...Kd5+!
  • Keys
    • 1.d3+!
      • 1...Kxd3+
        • 2.Sce5#
      • 1...Kf3+
        • 2.Sfe5#
      • 1...Kd4+
        • 2.Sce5#
      • 1...Kf4+
        • 2.Sfe5#
      • 1...Kd5+
        • 2.Se3#
      • 1...Kf5+
        • 2.Sfe5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);CHECK,N_GUARD,P_SPINR(a),S_CUTP(d),S_CUTP(d),S_FLIGHT::S(F)
    • K(c);CHECK,N_GUARD,P-FLIGHT,P_SPINP(d)::R(E)+S(F)
    • K(c);CHECK,N_GUARD,S_FLIGHT::QAB(B)+S(F),DCHECK
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(c);CHECK,N_GUARD,P-FLIGHT,P_SPINP(d)::R(E)+S(F)
        • K(c);CHECK,N_GUARD,P-FLIGHT::R(K)+S(J)
        • K(c);CHECK,N_GUARD,S_FLIGHT::R(K)+S(J)
      • Refutation
        • K(c);CHECK,S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);CHECK,N_GUARD,S_FLIGHT::R(K)+S(J),DCHECK
        • K(c);CHECK,N_GUARD,P-FLIGHT,P_SPINP(d)::R(E)+S(F)
        • K(c);CHECK,N_GUARD,P-FLIGHT::R(K)+S(J)
      • Refutation
        • K(c);CHECK,S_FLIGHT
  • Actual
    • P(C);CHECK
    • Vars
      • K(c);CHECK,N_GUARD,P_SPINR(a),S_FLIGHT,XP(C)::S(F)
      • K(c);CHECK,N_GUARD,S_FLIGHT::R(K)+S(J),DCHECK
      • K(c);CHECK,N_GUARD,P-FLIGHT,P_SPINP(d)::R(E)+S(F)
      • K(c);CHECK,N_GUARD,P-FLIGHT::R(K)+S(J)
      • K(c);CHECK,N_GUARD,S_FLIGHT::QAB(B)+S(F),DCHECK
      • K(c);CHECK,N_GUARD,S_FLIGHT::R(K)+S(J)
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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).