MESON Chess Problem Database

Problem Display
PID: 24473 (7B/6N1/6pk/3Q3N/8/6K1/8/8 w - - 0 1)

Gnilomedov, G

1/2 Prize, Komsomolets Zanopi, 1974

7B/6N1/6pk/3Q3N/8/6K1/8/8

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...gxh5
      • 2.Qxh5#
  • Tries
    • 1.Sf4?
      • 1...g5
        • 2.Qh1#
      • 1...Kh7!
    • 1.Qc6?
      • 1...Kg5
        • 2.Qc1#
      • 1...Kh7!
    • 1.Qe6?
      • 1...Kg5
        • 2.Qe3#
      • 1...Kh7!
    • 1.Qf7?
      • 1...Kg5
        • 2.Qf4#
      • 1...gxh5
        • 2.Qxh5#
      • 1...g5
        • 2.Sf5#
      • 1...Kh7!
    • 1.Qd6?
      • 1...Kg5
        • 2.Qf4#
        • 2.Qd2#
      • 1...Kh7!
  • Keys
    • 1.Qh1!
      • 1...Kg5
        • 2.Qc1#
      • 1...Kh7
        • 2.Sf6#
      • 1...gxh5
        • 2.Qxh5#
      • 1...g5
        • 2.Sf4#

This anticipates 233021(2010)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XS(C)::QAR1(B),XP(a)
  • Tries
    • Try
      • S(C);
      • Vars
        • P(a);SBLOCK::QAR(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);OGATE,XS(C)::QAR1(B),XP(a)
        • P(a);N_GUARD,SBLOCK::S(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB(B)
      • K(b);P-FLIGHT::QAR(B)+S(C),DCHECK
      • P(a);OGATE,P_SPINP(a),XS(C)::QAR1(B),XP(a)
      • P(a);SBLOCK::QAR(B)+S(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).