MESON Chess Problem Database

Problem Display
PID: 272340 (2K5/2N2R1B/7r/8/p1Pkp1Rn/Q1p4b/1pP5/6N1 w - - 0 1)

Klemanic, Emil

Pat a Mat, 1999

2K5/2N2R1B/7r/8/p1Pkp1Rn/Q1p4b/1pP5/6N1

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qxc3#
    • 1...Ke5
      • 2.Qc5#
    • 1...Bf1
      • 2.Rxe4#
  • Tries
    • 1.Se2+?
      • 1...Kxc4
        • 2.Qxc3#
      • 1...Ke5
        • 2.Qc5#
      • 1...Ke3!
    • 1.Se6+?
      • 1...Ke3
        • 2.Qxc3#
      • 1...Kxc4
        • 2.Qc5#
      • 1...Ke5
        • 2.Rxe4#
      • 1...Rxe6!
  • Keys
    • 1.Rd7+!
      • 1...Ke3
        • 2.Qc5#
      • 1...Kxc4
        • 2.Rxe4#
      • 1...Ke5
        • 2.Qxc3#
      • 1...Rd6
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);N_GUARD,N_SPINP(f),P_SPINP(b),S_FLIGHT::QAR2(C),XP(b)
    • K(e);N_GUARD,N_SPINP(f),S_FLIGHT::QAR2(C)
    • B(c);N_PINR(E)::R1(E),XP(f)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,XP(D)::QAR1(C),XP(b)
        • K(e);N_GUARD,N_SPINP(f),S_FLIGHT::QAR2(C)
      • Refutation
        • K(e);N_SPINP(f),P_SPINP(b),S_FLIGHT
    • Try
      • S(F);CHECK,N_SPINR(E)
      • Vars
        • K(e);N_GUARD,N_SPINP(f),P_SPINP(b),S_FLIGHT::QAR2(C),XP(b)
        • K(e);P-FLIGHT,XP(D)::QAR1(C)
        • K(e);N_SPINP(f),S_FLIGHT::R1(E),XP(f)
      • Refutation
        • R(h);XS(F)
  • Actual
    • R(G);CHECK,N_SPINR(E)
    • Vars
      • K(e);N_GUARD,N_SPINP(f),P_SPINP(b),S_FLIGHT::QAB(C)
      • K(e);P-FLIGHT,XP(D)::R(E),XP(f)
      • K(e);N_GUARD,N_SPINP(f),S_FLIGHT::QAB(C),XP(b)
      • R(h);P_SPINR(h)::R1(E),XP(f)
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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).