MESON Chess Problem Database

Problem Display
PID: 22236 (2r1bR2/4p3/1N1nkP2/4p3/B3p3/B7/5QR1/5nK1 w - - 0 1)

Ivanov, Vadim Aleksandrovich

Die Schwalbe, 2000

2r1bR2/4p3/1N1nkP2/4p3/B3p3/B7/5QR1/5nK1

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Bd7#
    • 1...Bg6
      • 2.Bd7#
    • 1...Bd7
      • 2.Bxd7#
    • 1...Bf7
      • 2.Bd7#
    • 1...exf6
      • 2.Qxf6#
  • Tries
    • 1.fxe7?
      • threat
        • 2.Qf6#
      • 1...Kxe7
        • 2.Qf6#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sf7
        • 2.Rg6#
      • 1...Bf7!
    • 1.f7?
      • threat
        • 2.Rg6#
      • 1...Bxf7
        • 2.Bd7#
      • 1...Sg3!
  • Keys
    • 1.Rg6!
      • threat
        • 2.f7#
      • 1...Bxg6
        • 2.Bd7#
      • 1...exf6
        • 2.Qxf6#
      • 1...Bf7
        • 2.Bd7#
      • 1...Sf7
        • 2.fxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::B(E)
    • B(h);N_GUARD::B(E),XB(h)
    • P(f);OGATE,XP(G)::QAR1(B),XP(f)
  • Tries
    • Try
      • P(G);XP(f)
      • Threat
        • QAR1(B)
      • Vars
        • K(e);P-FLIGHT,P_SPINS(d),XP(G)::QAB1(B)
        • S(d);N_GUARD::QAB1(B),XS(d)
        • S(d);S_CUTB(h)::R(C)
      • Refutation
        • B(h);
    • Try
      • P(G);
      • Threat
        • R(C)
      • Vars
        • B(h);N_GUARD,XP(G)::B(E)
      • Refutation
        • S(a);
  • Actual
    • R(C);
    • Threat
      • R(C)+P(G)
    • Vars
      • B(h);N_GUARD,XR(C)::B(E)
      • P(f);OGATE,P_SPINP(f),XP(G)::QAR1(B),XP(f)
      • B(h);N_GUARD::B(E)
      • S(d);S_CUTB(h)::R(C)+P(G),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).