MESON Chess Problem Database

Problem Display
PID: 12347 (8/4K3/B1PQ3B/R1n1N3/3Pk1p1/3pp2n/b5P1/8 w - - 0 1)

Antonov, Yuri Mikhailovich

1st Prize, Die Schwalbe, 1978

8/4K3/B1PQ3B/R1n1N3/3Pk1p1/3pp2n/b5P1/8

#2

9 + 7

3750 FIDE Album (1977-1979) 1984
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qg6#
    • 1...Sb3
      • 2.Bxd3#
    • 1...Sa4
      • 2.Bxd3#
    • 1...Se6
      • 2.Bxd3#
    • 1...Sb7
      • 2.Bxd3#
    • 1...Sd7
      • 2.Bxd3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe6#
      • 1...Sd7
        • 2.Qd5#
      • 1...d2!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Bxd3#
      • 1...Sd7!
    • 1.Sd7?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Bxd3#
      • 1...Sxd7!
    • 1.Sf7?
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Bxd3#
      • 1...Sd7!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Bxd3#
      • 1...Sd7
        • 2.Qg6#

This anticipates 167114(2010)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • K(e);S_FLIGHT::QAB1(G)
    • S(g);N_GUARD::B(E),XP(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P_SPINS(g),S_FLIGHT::QAB1(G)
        • S(g);::QAB1(G)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P_SPINS(g),S_FLIGHT::B(E),XP(b)
      • Refutation
        • S(g);
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P_SPINS(g),S_FLIGHT::B(E),XP(b)
      • Refutation
        • S(g);XS(D)
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P_SPINS(g),S_FLIGHT::B(E),XP(b)
      • Refutation
        • S(g);
  • Actual
    • S(D);
    • Threat
      • QAR1(G)
    • Vars
      • K(e);P_SPINS(g),S_FLIGHT::B(E),XP(b)
      • S(g);::QAB(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).