MESON Chess Problem Database

Problem Display
PID: 144974 (4B3/1pKp4/p7/4Q3/2k2pRn/2P5/prp1p3/8 w - - 0 1)

Zarur, Almiro Elias

3rd Prize, Problem (Zagreb), 1970

4B3/1pKp4/p7/4Q3/2k2pRn/2P5/prp1p3/8

#2

5 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd4#
  • Tries
    • 1.Bf7+?
      • 1...Kd3
        • 2.Qd4#
      • 1...d5!
    • 1.Rxf4+?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb3!
    • 1.Qd4+?
      • 1...Kb3
        • 2.Qb4#
      • 1...Kb5!
    • 1.Qc5+?
      • 1...Kb3
        • 2.Qb4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxc5!
  • Keys
    • 1.Qxf4+!
      • 1...Kb3
        • 2.Qb4#
      • 1...Kxc3
        • 2.Qe3#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb5
        • 2.Qe5#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kd5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(f),S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::QAR1(C)
      • Refutation
        • P(j);
    • Try
      • R(B);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT::QAR1(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(f)
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(e);P_SPINP(j),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::QAR1(C)
      • Refutation
        • K(e);N_SPINP(f),P-FLIGHT,XQ(C)
  • Actual
    • Q(C);CHECK,XP(f)
    • Vars
      • K(e);OGATE,S_FLIGHT::QAR1(C)
      • K(e);P-FLIGHT,XP(A)::QAR2(C)
      • K(e);S_FLIGHT::QAR1(C)
      • K(e);P_SPINP(j),S_FLIGHT::QAR(C)
      • K(e);P-FLIGHT::QAR1(C)
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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).